Police continue the investigation

UPDATE September 3: 

Lake County Sheriff's Department said in a press conference that new evidence came in yesterday in the Fox Lake, Ill. manhunt. 

A surveillance video was handed over by a homeowner to police. The video was sent to Homeland Security for processing.

Also, a gun was recovered in the investigation. Police would not say where it was found or who it belonged to because it was part of the investigation.

Preliminary results from autopsy of Lt. Charles Joseph Gliniewicz were, also, turned over to police. 


(CBS NEWS) FOX LAKE, Ill. -- Authorities followed up on social media tips and broadened the hunt Wednesday for three suspects wanted in the fatal shooting of a popular Illinois police officer, even as they acknowledged that they had no indication the men were still in the area where the slaying happened.
After an intensive 14-hour \"grid search\" of homes, railroad tracks and marshland in the village of Fox Lake, the second-day manhunt turned to the painstaking detective work of chasing down tips, collecting and reviewing surveillance video and interviewing residents near the crime scene. Meanwhile, new search teams rippled out into subdivisions beyond the initial 2-square-mile perimeter established on Tuesday. At least 100 investigators were on the ground.

Lake County Major Crimes Task Force Cmdr. George Filenko said Wednesday that authorities had received numerous tips on social media and were canvassing the area for surveillance video.

\"We have not discounted anything,\" Filenko said.

A major challenge for investigators was the lack of a description of the suspects beyond the vague one that came from the officer, who told dispatchers he was pursuing three suspicious men - two white, one black - moments before he was shot.

\"That was the only description provided,\" said Filenko, the lead investigator on the case. \"So of course we're getting the public calling in every time they see that match of three individuals or even two individuals. We've closed out those leads completely as being unsubstantiated.\"

Lt. Charles Joseph Gliniewicz, a 30-year police veteran, was shot Tuesday morning while pursuing three men he spotted on his way to work along a roadway with nothing around but open fields and abandoned-looking businesses, Filenko said. Gliniewicz told dispatchers the men ran into a swampy area, and he requested a second unit.

Dispatchers soon lost contact with him. Backup officers found him about 50 yards from his squad car with a gunshot wound. He died soon after.

Filenko said there was no indication he was intentionally targeted, though authorities did not rule out that possibility.

The initial, frenzied search for his killers involved law enforcement agencies from across the state. Some wore tactical gear and toted high-powered rifles. Officers took up positions on rooftops and along railroad tracks and scanned the terrain through rifle scopes and binoculars. Others leaned out of helicopters with weapons at the ready.

On Tuesday night, they declared the initial search zone clear, allowing investigators to begin poring over the crime scene and surrounding area.

Still, they knocked on doors with caution.

\"I believe that the search teams did a thorough job, but I know there have been a number of national incidents where suspects have cleverly escaped or hidden in place,\" Filenko said. \"So anything's possible.\"

Investigators were recovering and reviewing video recordings, but so far none has captured images of the suspects, Filenko said.

Despite the challenges, he told reporters that he felt the teams were making progress.

\"As always, we're relying on the public, too,\" he said. \"All it takes is one tip or good lead to break a case wide open.\"

Residents of the usually sleepy community were urged to stay vigilant. Schools that went on lockdown the day of the shooting were closed a day later.

An emotional Mayor Donny Schmit described the slain officer as a personal friend, a three-decade member of the department.

\"We lost a family member,\" Schmit said of the 52-year-old officer known around town as \"G.I. Joe.\" ''His commitment to the people of this community has been unmatched and will be dearly missed.\"

Gliniewicz, a married father of four sons, is the first on-duty officer killed in Lake County since 1980, reports CBS News correspondent Anna Werner.

\"He was a lot of everything to everybody, everybody was just safe around Joe,\" friend Tammy Rivette said.

The 52 year-old served as an adviser, mentoring aspiring police officers in the city's Explorer program.

\"He meant something to this community,\" one of his trainees Zachary Point said. \"He made it a better place; you felt comfortable.\"

Workers adorned the village hall with black and purple bunting in a display of mourning. Several evening vigils were planned.

Eleven-year-old Takoa Thomas, a sixth grader, stood on the side of a road with a handmade sign that read \"Cops' lives matter. RIP GI Joe.\"

\"I wanted to be out here to show support,\" the boy said.

His mother, Tara England, 41, said the boy's school was closed, and she had mixed feelings about their safety.

\"One of the reasons I'm out here is I don't want to be home alone,\" she said. \"My husband's at work.\"

\"But if it were me, I'd be long gone,\" she said of the suspects.

The area near the Wisconsin border area is popular for boating and other outdoor pursuits because of its forest preserves and a chain of lakes that partly encircles Fox Lake.

Gliniewicz's death is the third law enforcement fatality in Illinois this year, according to the Law Enforcement Officers Memorial Fund, which tracks officers deaths so their names can be enshrined on a Washington, D.C., memorial.

It says police shooting deaths in the U.S. are down 13 percent this year compared with the same January-to-September period last year. There were 30 last year and 26 this year.

Attorney General Loretta Lynch condemned the recent fatal shootings, telling a housing conference in Washington that violence against \"all of us, regardless of what uniform any of us wear\" must end.

Lynch said it's a \"sad fact now\" that no one is safe. She listed shootings of churchgoers at a Bible study in Charleston, South Carolina, moviegoers in Louisiana, military personnel in Tennessee and two television journalists killed on the air last week in Virginia.

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