New Yorker who led crusade to find daughter's killer found murdered

Before you go, we thought you'd like these...

Official: We Are Closer Than Ever To Finding Long Island Serial Killer

NEW YORK, July 24 (Reuters) - A New York woman who helped lead an unsuccessful crusade to capture her daughter's suspected murderer, believed to be a serial killer, was found slain in her upstate apartment, law enforcement officials said.

Police in Ellenville, a town in the Catskills Mountains north of New York City, said they identified the deceased woman as Mari Gilbert, 52. She was found dead on Saturday afternoon.

A second daughter, Sarra Gilbert, 27, was arrested shortly after the discovery and charged with her mother's murder and a weapons charge, police said in a statement.

See photos of Mari and her crusade to find her daughter's killer:

9 PHOTOS
Shannan Gilbert's mother found dead
See Gallery
Shannan Gilbert's mother found dead
FILE - In this Friday Feb. 12, 2016 photo, Sarra Elizabeth Gilbert, center, is shown standing between her sisters Stevie Smith, left, and Sherre Gilbert, right, as her mother Mari Gilbert, seated left, and attorney John Ray, seated right, hold a press conference about Shannan Gilbert, a Jersey City, N.J., prostitute whose remains led to the discovery of 10 sets of human remains strewn along Long Islandâs Gilgo Beach. Police say Mari Gilbert was found dead in her apartment Saturday, July 23, 2016, and Sarra Gilbert has been charged in the death of her mother. (AP Photo/Frank Eltman, File)
Mari Gilbert speaks to reporters at the funeral of her daughter, Shannan Gilbett on Thursday, March 12, 2015, at Amityville Cemetery in Amityville, N.Y. Gilbert was a Jersey City, N.J., prostitute whose disappearance in 2010 led to the discovery of 10 sets of human remains along a Long Island, N.Y., beach highway. Police have said Gilbert's death is unrelated to the killings of a suspected serial killer, but Gilbert's family disputes that conclusion. (AP Photo/Frank Eltman)
Mari Gilbert prays over the coffin of her daughter, Shannan Gilbett on Thursday, March 12, 2015, at Amityville Cemetery in Amityville, N.Y. Gilbert was a Jersey City, N.J., prostitute whose disappearance in 2010 led to the discovery of 10 sets of human remains along a Long Island, N.Y., beach highway. Police have said Gilbert's death is unrelated to the killings of a suspected serial killer. (AP Photo/Frank Eltman)
Mari Gilbert speaks to reporters at the funeral of her daughter, Shannan Gilbett on Thursday, March 12, 2015, at Amityville Cemetery in Amityville, N.Y. Gilbert was a Jersey City, N.J., prostitute whose disappearance in 2010 led to the discovery of 10 sets of human remains along a Long Island, N.Y., beach highway. Police have said Gilbert's death is unrelated to the killings of a suspected serial killer, but Gilbert's family disputes that conclusion. (AP Photo/Frank Eltman)
Mari Gilbert, mother of Shannan Gilbert, speaks at a news conference near the site where her daughter's remains were found in Babylon, N.Y., Tuesday, Dec. 20, 2011. Gilbert, the mother of a prostitute whose remains were found in a Long Island marsh, says she believes her daughter was murdered by a serial killer, and wants federal authorities to take over the investigation. (AP Photo/Seth Wenig)
Mari Gilbert speaks to reporters at the funeral of her daughter, Shannan Gilbett on Thursday, March 12, 2015, at Amityville Cemetery in Amityville, N.Y. Gilbert was a Jersey City, N.J., prostitute whose disappearance in 2010 led to the discovery of 10 sets of human remains along a Long Island, N.Y., beach highway. Police have said Gilbert's death is unrelated to the killings of a suspected serial killer. (AP Photo/Frank Eltman)
In this Dec. 8, 2011 photo, investigators use a backhoe to dig while searching for Shannan Gilbert's body in different sectors of a marsh area just east of Oak Beach, N.Y. Police found what they believe to be Gilbertâs remains in the area on Tuesday Dec. 13, 2011. (AP Photo/Kevin P. Coughlin
Articles about the recent discovery of bodies near a Long Island, New York beach as seen in April 6 issues of Newsday and the New York Post newspapers April 7, 2011 in New York. Four bodies recently found near the town of Gilgo Beach on Long Island, about 45 miles (72 km) from New York city, brings the count to eight bodies discovered in the area, including four last December, leading authorities to speculate there is a serial killer at work. The name Shannan refers to prostitute Shannan Gilbert of Jersey City, New Jersey whose disappearance started the search by local officials that led to the discovery of the bodies. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)
An officer from the Suffolk County Police Department's K-9 Unit uses a dog to search through the brush along the median of Ocean Parkway, near Oak Beach in Long Island, N.Y., on Monday, Dec. 5, 2011. Under dense fog, officers continued the search for missing 24-year-old Jersey City sex-worker Shannan Gilbert, focusing along Ocean Parkway, from the Robert Moses Causeway to Tobay Beach, state police said. (AP Photo/Kevin P. Coughlin)
of
SEE ALL
BACK TO SLIDE
SHOW CAPTION +
HIDE CAPTION

It was not immediately clear how the elder Gilbert was killed or what might have motivated the attack. Police said they would release more details on Monday.

Both Mari and Sarra Gilbert helped in the high-profile campaign to catch the so-called Gilgo Killer, who family and privately-hired investigators suspect murdered Shannan Gilbert, 24.

Shannon Gilbert, a sex-worker who found clients on Craigslist, disappeared in May 2010 after leaving the home of a client near Long Island's Gilgo Beach. Nearly a dozen bodies linked to the same murderer were later found as authorities searched the beach for Shannon Gilbert's remains.

RELATED: Murder rates in New York metro

Most of the victims were female sex workers. But the body of a toddler belonging to one of the women and a man dressed as a woman were also found, local media reported.

Shannon's remains were found more than a year after her disappearance. Local investigators were unable to determine a cause of her death because some of her body parts were missing.

Unsatisfied with the work of the Suffolk County Police Department, Gilbert's mother made television appearances calling on the Federal Bureau of Investigation to take over the investigation, but she was unsuccessful.

Read Full Story

People are Reading