Stackowitz was serving a 17-year sentence for robbery by force when he escaped the infirmary at the Carroll County Prison Work Camp in Carrolton, Georgia, on Aug. 22, 1968, according to authorities.
Investigators caught a break when they discovered a possible alias for Stackowitz. The alias led police to an address in Sherman, Connecticut.
Stackowitz was being held Monday night at a Connecticut jail facility, the U.S. Marshals said in a statement.
Related: Other notable recent fugitives and manhunts:
Notable recent fugitives, manhunts
Fugitive of 48 years, Robert Stackowitz, captured in Connecticut
FOX LAKE, IL - SEPTEMBER 01: Police officers search an area for suspects involved in shooting an officer September 1, 2015 in Fox Lake, Illinois. A manhunt for three suspects is underway after an officer from Fox Lake Police was shot and killed this morning. (Photo by Scott Olson/Getty Images)
FOX LAKE, IL - SEPTEMBER 01: Residents show their support as the manhunt continues for three suspects in the murder of a Fox Lake Police officer on September 1, 2015 in Fox Lake, Illinois. Lt. Joe Gliniewicz was found with a gunshot wound shortly after the department lost radio communication with him during a foot chase of three suspects. (Photo by Scott Olson/Getty Images)
Map locates Fox Lake, Illinois.; 2c x 3 inches; 96.3 mm x 76 mm;
FINDON, WEST SUSSEX - JULY 17: A Police search team look for evidence at the scene of a murder on the A24 road on July 17, 2015 in Findon, West Sussex. Police have launched a manhunt after a 79 year old motorist was stabbed to death after a vehicle collision. (Photo by Peter Macdiarmid/Getty Images)
This undated photo released by the Memphis Police Department shows Tremaine Wilbourn. The ex-con accused of killing Memphis, Tenn., Police Officer Sean Bolton, turned himself into federal authorities Monday, Aug. 3, 2015, after a two-day manhunt. (Memphis Police Department via AP)
FILE - In this June 10, 1993 file photo, Joaquin Guzman Loera, alias "El Chapo" Guzman, is shown to the media after his arrest at the high security prison of Almoloya de Juarez, on the outskirts of Mexico City. Guzman escaped from a maximum security federal prison in 2001 and continues to be a fugitive. On Thursday, Feb. 14, 2013, the Chicago Crime Commission and the Drug Enforcement Administration is scheduled to name Guzman, the head of Mexico's Sinaloa crime cartel, as the new Public Enemy No. 1., the first time since Prohibition-era gangster Al Capone that authorities in the city deemed a crime figure so ominous a threat to deserve the label. (AP Photo/Damian Dovarganes, File)
A view of the Altiplano maximum security prison through an opening in the half-built house from where authorities claim drug lord Joaquin "El Chapo" Guzman made his escape via an underground tunnel leading from his prison cell, in Almoloya, west of Mexico City, Thursday, July 16, 2015. A widespread manhunt that included highway checkpoints, stepped up border security and closure of an international airport failed to turn up any trace of Guzman after he escaped through an underground tunnel in his prison cell. (AP Photo/Marco Ugarte)
This Thursday, Feb. 5, 2015 photo provided by the Mohave County Sheriff shows Robert Roy Clark, 29, of Dennison, Ohio. Clark, wanted in the killings of an elderly Ohio couple and in armed robberies in three states, was arrested early Thursday in Arizona after a high-speed chase and nationwide manhunt. An FBI spokeswoman in Cleveland said Clark was arrested by the Mohave County sheriff's office in Kingman. One of his companions, Tabatha Marie Hazel, 26, of Canton, Ohio, a suspect in the armed robberies, was arrested with him. Jeffrey Caley Jr., one of his two companions sought in the robberies, remains at large. (AP Photo/Mohave County Sheriff)
Police stand guard, Tuesday, Jan. 6, 2015, at the area where police and suspects exchanged gunfire the night before, in the Bronx borough of New York. A manhunt was under way Tuesday for at least two suspects who shot and wounded two New York City plainclothes police officers responding to a robbery late Monday. (AP Photo/Bebeto Matthews)
CONSTABLE, NY - JUNE 29: News crews report from a farm, less than two miles from the Canadian border, where convicted murderer and escaped convict David Sweat was said to have been shot and captured in a nearby alfalfa field on June 29, 2015 near Constable, New York. On June 26, Richard Matt, who escaped with Sweat, was shot and killed in the same area. More than 1,000 State Police, Border Patrol, correction officers, FBI and other law enforcement agencies have been searching for the pair since they were discovered missing from a prison in nearby Dannemora on June 6. (Photo by Scott Olson/Getty Images)
Police stand over David Sweat after he was shot and captured near the Canadian border Sunday, June 28, 2015, in Constable, N.Y. Sweat is the second of two convicted murderers who staged a brazen escape three weeks ago from a maximum-security prison in northern New York. His capture came two days after his escape partner, Richard Matt, was shot and killed by authorities. (AP Photo)
UNDATED: In this handout from the New York State Police, progression images of escaped inmates David Sweat (L) and Richard Matt are seen. Sweat and fellow inmate Matt escaped from the Clinton Correctional Facility in upstate New York on June 6, and a manhunt for them is ongoing. The images are intended to show what the inmates would look like after almost two weeks on the run. (Photo by New York State Police via Getty Images)
LE PLESSIS BELLEVILLE, FRANCE - JANUARY 09: French army helicopters prepares to take off from the aerodrome to secure the airspace over Dammartin-en-Goelle and the area surrounding, where it is thought the suspects linked to the Charlie Hebdo massacre are holding a hostage, on January 9, 2015 in Le Plessis Belleville, France. A huge manhunt for the two suspected gunmen in Wednesday's deadly attack on French satirical newspaper 'Charlie Hebdo' has entered its third day. (Photo by Marc Piasecki/Getty Images)
WATERTOWN, MA - APRIL 19: Police converge near the scene where it was believed 19-year-old bombing suspect Dzhokhar A. Tsarnaev is in hiding on April 19, 2013 in Watertown, Massachusetts. After a car chase and shoot out with police, one suspect in the Boston Marathon bombing, Tamerlan Tsarnaev, 26, was shot and killed by police early morning April 19, and a manhunt is underway for his brother and second suspect, 19-year-old suspect Dzhokhar A. Tsarnaev. The two men, reportedly of Chechen origin, are suspects in the bombings at the Boston Marathon on April 15, that killed three people and wounded at least 170. (Photo by Spencer Platt/Getty Images)
WATERTOWN, MA - APRIL 19: Many different law enforcement agencies descend on an area around Franklin Street on April 19, 2013 in Watertown, Massachusetts. After a car chase and shootout with police, one suspect in the Boston Marathon bombing, Tamerlan Tsarnaev, 26, was shot and killed by police early morning April 19, and a manhunt is underway for his brother and second suspect, 19-year-old Dzhokhar A. Tsarnaev. The two men are suspects in the bombings at the Boston Marathon on April 15 that killed three people and wounded at least 170. (Photo by Jared Wickerham/Getty Images)
WATERTOWN, MA - APRIL 19: In this handout provided by the Massachusetts State Police, the boat in which Boston Marathon bombing suspect Dzhokhar A. Tsarnaev was hiding is seen from a police helicopter on Franklin Street on April 19, 2013 in Watertown, Massachusetts. A manhunt for Dzhokhar A. Tsarnaev, 19, a suspect in the Boston Marathon bombing ended after he was apprehended on a boat parked on a residential property. His brother Tamerlan Tsarnaev, 26, the other suspect, was shot and killed after a car chase and shootout with police. The bombing, on April 15 at the finish line of the marathon, killed three people and wounded at least 170 (Photo by Massachusetts State Police via Getty Images)