11/29/2010 09:57 am ET Updated May 25, 2011

Michael Flisk Murder: Man Questioned In Slaying Of Chicago Cop, Homeowner

A teenager is being questioned Monday in the slaying of Chicago Police Officer Michael Flisk and a former Chicago Housing Authority cop, who were killed following a Friday burglary on the South Side.

Flisk, an evidence technician and 19-year veteran with the department, responded to the 8100 block of South Burnham Avenue Friday after former CHA officer Stephen Peters called police. Peters, 44, reported that his GT Mustang had been stolen. Flisk was discussing the burglary with Peters in the alley when a gunman approached and fatally shot both men. The Sun-Times reports:

Peters' mother said Saturday she believes the burglar may have returned to collect stolen loot he had hidden in trash cans, then started shooting when confronted. Peters' red Ford Mustang was stolen during the original burglary, police said.

Flisk was the fifth Chicago police officer to be shot and killed this year and the second in one week. Officer David Blake was found fatally shot in his SUV Monday on the South Side.

"There hasn't been a year this bad since the 1960s," Fraternal Order of Police president Mark Donahue told the Chicago Tribune over the weekend.

The Sun-Times reports that officers are currently questioning a 19-year-old parolee about his possible involvement in the incident. The paper reports that the teen was taken into custody after an anonymous donor's contribution through the Chicago Police Memorial Foundation doubled the reward money from $10,000 to $20,000 for information leading to an arrest in the murders.

Officer Flisk is survived by his wife and four children. Peters, a military veteran, was retired after years of working for the Chicago Housing Authority and a suburban police department, NBC Chicago reports.

As the department tried to piece together yet another police officer's murder, hundreds of people paid respects to Officer David Blake at his funeral on Sunday.

"The thought that someone can shoot and kill a police officer is simply unacceptable," police Supt. Jody Weis said Friday. "We will squeeze that neighborhood and we will find the people who did this."

As of Monday morning, no charges had been filed in the murders of Blake, Flisk or Peters.

Anyone with information about the case can place a confidential, toll-free call to (888) 976-7468 or contact Calumet Area detectives at (312) 747-8272.