Zhang was last seen getting into the black Saturn Astra that has now been located, but an FBI spokesperson did not say where exactly the car was found.
The spokesman confirmed authorities are still looking for the 26-year-old student.
Zhang came to the United States from China to study at the University of Illinois in hopes of landing a professorship and helping her parents financially.
RELATED: A history of notable crimes and cases involving the FBI
U.S. Congress - Abscam. October 14, 1980. (Photo by Dan Brinzac/New York Post Archives / (c) NYP Holdings, Inc. via Getty Images)
Mugshot of American gangster Al Capone (1899 - 1947) smiling in a jacket and tie, Miami, Florida. (Photo by Hulton Archive/Getty Images)
A corporate mailroom employee uses gloves while sifting through letters October 15, 2001 in New York City. The FBI reported a letter containing anthrax was sent to US Senate Majority Leader Tom Daschle. (Photo by Mario Tama/Getty Images)
Fedreal Burau of Investigation (FBI) officers inspect the collapsed World Trade Center complex 16 September 2001 in New York. Investigation, clearing, and rescue work continues on the site of the 11 September nation's worst terrorist attack. (Photo credit ROBERTO SCHMIDT/AFP/Getty Images)
Sniper suspect John Allen Muhammad (Seated-L) watches as fellow sniper suspect Lee Boyd Malvo, wearing an orange jumpsuit, is identified in court during his trial in courtroom 10 at the Virginia Beach Circuit Court October 20, 2003 in Virginia Beach, Virginia. Muhammad fired his defense team and represented himself. (Photo by Martin Smith-Rodden-Pool/Getty Images)
American outlaw Bonnie Parker, playfully points a shotgun at her partner Clyde Barrow in 1932. The two were well-known wanted criminals during a two year period of robbery and murder until their death in 1934 in Gibson, Louisiana. (Photo via Getty Images)
Young Emmett Till wears a hat. Chicago native Emmett Till was brutally murdered in Mississippi. (Photo via Getty Images)
WASHINGTON, : This image shows a television broadcast at the US Justice Department in Washington DC, 02 October 2002, of Deputy Attorney General Larry Thompson (L) announcing, during a press conference, that former Enron Chief Financial Officer Andrew S. Fastow (L) has been charged with fraud, money laundering and conspiracy. Fastow reported to the FBI office in Houston, TX, earlier 02 October 2002. AFP PHOTO/Joyce NALTCHAYAN (Photo credit should read JOYCE NALTCHAYAN/AFP/Getty Images)
(Original Caption) This photo shows Joseph Clyde Amsler, 23, whom the FBI arrested on December 14th in connection with the kidnapping of Frank Sinatra Jr., 19. Keenan (another accomplice), and Amsler were arrested in the Los Angeles area. Irwin (third accomplice), was arrested in San Diego. Authorities said most of the $240,000 ransom which was paid has been recovered. The Sinatra youth, a singer, was taken from his motel room at the state line of Nevada, by two gunmen on December 8th. He was released unharmed in the Los Angeles area early December 11th, after the ransom had been paid.
Baton Rouge, UNITED STATES: Members of one of the several elite FBI Hostage Rescue Teams (HRT) in Baton Rouge, Louisiana, lift off for a patrol over New Orleans and surrounding areas 03 September, 2005, waiting to respond to any law enforcement situations where they are needed in the aftermath of Hurricane Katrina. AFP Photo/PAUL J. RICHARDS (Photo credit should read PAUL J. RICHARDS/AFP/Getty Images)
Iva Toguri, better known as Tokyo Rose, has plenty of time for reflection on her crimes here, as she waits in her jail cell in Yokohama for her upcoming trial for treason. The 29-year-old Los Angeles-born girl broadcasted propaganda to American forces on the Japanese 'Zero Hour' programs, but claims she was forced to do so.
Newspaper announcing John F. Kennedy's assassination. (Photo by Herb Scharfman/The LIFE Images Collection/Getty Images)
(Original Caption) 3/31/1966-Hattiesburg, Mississippi- Sam H. Bowers Jr., identified as imperial wizard of the super-secret White Knights of the Ku Klux Klan, appears outside FBI office in Hattiesburg March 31st after turning himself in in connection with the death of a Negro civil rights leader. Bowers said he had been 'staying with friends' during the four days a police dragnet was searching for him. Thirteen other Klansmen have been arrested and charged in the Feb. 10th fire-bombing death of Vernon Dahmer.
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U.S. embassy spokesman said on Sunday. Kilgore, alleged to have
belonged to a guerrilla gang that kidnapped U.S. newspaper heiress
Patty Hearst in 1974, is not expected to face charges for any offence
punishable with the death penalty, spokesman Brian Penn told Reuters.
Head shot of aspiring actress Elizabeth Short, a murder victim nicknamed the Black Dahlia
FILE PHOTO APR96 - Theodore Kaczynski , accused of being the Unabomber, is shown in his booking mugshot from April 1996. Kaczynski pleaded guilty to charges he waged a deadly 17-year campaign of terror under a court agreement that will spare him from the death penalty, U.S. Justice Department officials said January 22.
(Original Caption) President Richard Nixon, claiming he was misled by his staff, has assumes 'full responsibility' for the Watergate bugging and indicated a special prosecutor may be named to investigate the worst crisis of his presidency. Six top administration officials have resigned as a consequence of the case. Attorney General Richard G.Kleindienst and top White House aides H.R.Haldeman, John D.Ehrlichman and John W.Dean III all resigned April 30. Last week, L.Patrick Gray III, acting director of the F.B.I., and Jeb Stuart Magruder, a former Haldeman aide, also resigned.
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On June 9 she was reportedly on her way to sign an apartment lease when she got off a bus and into a black Saturn Astra.
Zhang's boyfriend has said she is normally very cautious and would not have left with a stranger unless duped or lured.
Some reports say she may have called a ride-sharing service after running late, and local police also say they have received reports of a man posing as a police officer.
Her father has traveled to Illinois from Nanping, China. He has begged whoever may have abducted his daughter to safely return her and emphasized, "We will forgive you."
He also asked his daughter to be strong.
The case is being treated as a kidnapping, and the FBI is offering a $10,000 reward for information in the case.
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Kevin Gibson, arrested for possession of marijuana.
(Photo via Miami-Dade County Corrections)
Matthew Ezekiel Stager is a a convicted sex offender.
(Photo: U.S. Marshals)
Mahin Khan, 18, is shown in this Maricopa County, Arizona, U.S. Sheriff's Office booking photo from July 1, 2016. Courtesy Maricopa County Sheriff's Office/Handout via REUTERS/ File Photo ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY
Mixed martial arts fighter Jason "Mayhem" Miller is seen in an undated booking photo released by the Orange County Sheriff's Department in California. Miller was arrested in Southern California on Friday for assault with a deadly weapon on an officer after he threw a ceramic tile at police outside his house, authorities said. REUTERS/Orange County Sheriff's Department/Handout via Reuters THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS
Robert Young, 43, is seen in this booking photo released to Reuters September 16, 2011. Young is one of two men accused of driving around Denver with their friend?s corpse and using the dead man?s debit card to pay for a night on the town including a visit to a strip club, prosecutors said on Friday. REUTERS/Denver District Attorney's Office/Handout (UNITED STATES - Tags: CRIME LAW) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Charles Justus, wanted for armed robbery, from Pleasant Hill, California.
Stockton Police Department photo shows Jeremy Meeks, 30, arrested on June 18, 2014 in a gang crackdown in a crime-ridden area of Stockton, California. The mugshot of Meeks, a convicted felon, went viral on a police Facebook page this week, making him an instant celebrity with Web users who have called him "handsome" and clicked "like" on his picture more than 64,000 times.
(REUTERS/Stockton Police/Handout via Reuters)
Ryan Elliot Giroux is seen in an undated picture from the Arizona Department of Corrections. Giroux has been identified by police as the gunman opened fire inside a motel room in the Phoenix suburb of Mesa on Wednesday, killing a man and wounding two women before shooting three more people.
(REUTERS/Arizona Department of Corrections/Handout)
The booking mugshot of 92-year-old Helen Staudinger is seen in this handout released March 23, 2011. The central Florida woman fired a semi-automatic pistol four times at her 53-year-old neighbor's house after he refused to kiss her, police said on Tuesday.
(REUTERS/Courtesy of Marion County Sheriffs Office/Handout)
Roger Hooton, charged with burglary of habitation in Dallas.
Cody J Plagmann, 37, is seen in an undated booking photo released by the Oregon State Police April 5, 2016. Two men accused of hunting a pair of protected bighorn sheep on private land and beheading them alongside an interstate highway in northern Oregon have been arrested on suspicion of poaching, police say.
(REUTERS/Oregon State Police/Handout)
In this handout from the Utah County Jail, Megan Huntsman is seen in a booking photo April 13, 2014. Huntsman was arrested and booked after the discovery of seven dead babies in cardboard boxes in a garage of a home in Pleasant Grove, Utah. She is charged with six counts of murder, it is reportedly unclear why therer are only six counts, for allegedly killing her own infants between 1996 and 2006.
(Photo by Utah County Jail via Getty Images)
Jesus Rodela of Dallas, wanted for a probation violation.
In this image provided by the Las Vegas Metropolitan Police Department, Larry Reid, brother of Senate Minority Leader Harry Reid, is pictured in a booking photo following his arrest on February 2, 2015 in Las Vegas, Nevada. Reid was arrested by Nevada Highway Patrol and charged with driving under the influence and assaulting a police officer.
(Photo by Las Vegas Metropolitan Police Department via Getty Images)
Nicole Carmon is shown in this booking photo in Thornton, Colorado, U.S., December 19, 2016. Courtesy Thornton Police Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY.
Linda Thompson, also known as Brian Thompson, is pictured in this undated handout booking photo obtained by Reuters October 12, 2016. Laramie County Sheriff's Department/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE WAS PROVIDED BY A THIRD PARTY. EDITORIAL USE ONLY
David Lopes Jackson is pictured in this undated booking photo provided by the St. Louis Metropolitan Police Department. Jackson, 35, was charged with two counts of second-degree arson in connection with fires set at the doors of two predominantly African-American churches in St. Louis, police said. REUTERS/St. Louis Metropolitan Police Department/Handout Via Reuters ATTENTION EDITORS - FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
James Boulware is shown in this 2013 booking photo courtesy of Lamar County Sheriff's Office, released on June 13, 2015.
Dallas Police Chief David Brown said the man whom police negotiators had spoken with inside the van identified himself as James Boulware, but police declined to name the suspect pending identification by a medical examiner. REUTERS/Lamar County Sheriff's Office/Handout via Reuters
ATTENTION EDITORS - FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Kenneth Stancil is shown in this Volusia County Corrections Department booking photo taken on April 14, 2015. Stancil, the 20-year-old former student, sought in the fatal shooting of an employee at a North Carolina community college was arrested on Tuesday after being found sleeping on a beach in Florida, police said.
REUTERS/Volusia County Corrections/Handout FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Christian Jose Gomez is pictured in this undated handout booking photo provided by the Pinellas County Sheriff?s Office. Gomez, a Florida man, confessed to decapitating his mother with an ax on New Year's Eve after becoming upset by her request to put some boxes into the attic of their home, authorities said, January 2, 2015. REUTERS/Pinellas County Sheriff?s Office/Handout (UNITED STATES - Tags: CRIME LAW) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Leonard Sullivan, 73, is seen in a booking photo released by the Las Vegas Metropolitan Police Department in Las Vegas, Nevada October 13, 2014. One man was shot and wounded on Monday when a gunman opened fire in a state office building in Las Vegas and Leonard Sullivan was taken into custody as a suspect, police said. The booking photo of Sullivan, a resident of Las Vegas, appears to show him being restrained by officers. REUTERS/Las Vegas Metropolitan Police Department/Handout (UNITED STATES - Tags: CRIME LAW) THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS
Zachary Rapheal Torrance, 18, is pictured in this booking photo provided by the Hueytown Police Department. Torrance, a suspect in an armed robbery of a Subway sandwich restaurant in Alabama, told investigators he acted out of anger because of his failed "Subway Diet," police said on October 31, 2014. REUTERS/Hueytown Police Department/Handout (UNITED STATES - Tags: CRIME LAW) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Beauty queen Kendra Gill is shown in this Salt Lake County Sheriff's Office booking photo released on August 5, 2013. Gill, Utah hometown beauty pageant winner was among four people arrested on suspicion of throwing homemade bombs at houses in a Salt Lake City suburb over the weekend, authorities said on Monday. REUTERS/Salt Lake County Sheriff's Office/Handout (UNITED STATES - Tags: CRIME LAW HEADSHOT) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Actor Jason London is shown in this booking photo provided by Scottsdale Police Department in Scottsdale, Arizona January 29, 2013. London was arrested Sunday on suspicion of assault and disorderly conduct outside a Scottsdale,Arizona bar January 27, 2013 according to news reports. REUTERS/Scottsdale Police/Handout (UNITED STATES - Tags: CRIME LAW ENTERTAINMENT SOCIETY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Richard Allen Schoenfeld is pictured in this booking photo dated January 12, 2012, and received by Reuters June 21, 2012. Schoenfeld 57, was freed on Wednesday after serving more than 34 years in prison for his role in the 1976 abduction of 26 schoolchildren and their bus driver in the town of Chowchilla in central California. REUTERS/California Department of Corrections and Rehabilitation/Handout (UNITED STATES - Tags: CRIME LAW SOCIETY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Alleged drug kingpin Christopher "Dudus" Coke wears a wig in this handout photograph released to Reuters June 23, 2010. Coke was arrested by police on the outskirts of Kingston on Tuesday, peacefully ending a manhunt for the fugitive at the center of last month's deadly raids in the Jamaican capital. Coke, 42, is wanted for extradition to the United States on drug and gun trafficking charges. Police said they arrested him without violence at a road checkpoint in the Portmore area of St. Catherine Parish. QUALITY FROM SOURCE. REUTERS/Handout (JAMAICA - Tags: CRIME LAW IMAGES OF THE DAY) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS
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The University of Illinois and Champaign County Crime Stoppers are offering a reward of up to $40,000.