"It was recovered from the crime scene and it is relevant," Lake County Major Crime Task Force Cmdr. George Filenko said of the DNA. He did not go into any other details.
One week ago, the 30-year police veteran was killed while pursuing three "suspicious" men. Backup officers found Gliniewicz about 50 yards from his squad car. He had been shot.
Officials had been looking at several videos from the night of Lt. Gliniewicz's death, but determined the videos offered no leads, Lake County Sheriff's Sgt. Christopher Covelli said. Three men identified in one video were questioned and it was determined they were not involved in the officer's murder.
"There was no camera in the lieutenant's car," officials said, and the area was prone to vandalism and drug sales.
Officials said the investigation continues and they're following up on all leads.
"Everything is put on the table, analyzed, re-analyzed," Cmdr. Filenko said. "We do not discount a single thing."
A fundraiser for Lt. Gliniewicz's family was held Tuesday night at a restaurant in nearby Richmond.
"People, they're grieving, they're shocked, but they wanted to do something to help in some way," said Kim Crawford, event organizer.
Around the same time in Fox Lake, there was a moment of silence at the beginning of the city council meeting. The former police chief was among those offering tributes to Lt. Gliniewiecz during the meeting.
A $50,000 reward is being offered for information leading to an arrest. The tip line phone number is 1-800-CALL-FBI. Tips, photos and video can also be submitted online: www.fbi.gov/foxlake.
Officer mourned, laid to rest
On Monday, Gliniewicz was laid to rest. Thousands of people lined the streets as his casket was taken on an 18-mile procession. About 1,500 law enforcement vehicles came from as far as New York and Los Angeles to be part of the service.
PHOTOS: Memorial services held for Lt. Joe Gliniewicz