UPDATE 5:55 P.M.: Mike Tobin reported that the search continues for three suspects in the shooting death of Lt. Joe Gliniewicz.

Tobin said that hundreds of officers are taking part in the search, along with aircraft and K9 units.

Tobin also reported that parents were asked to pick up their children at local schools.

UPDATE 5:00 P.M.: Lake County Sheriff's Det. Chris Covelli revealed in a press conference that Lt. Charles Joseph Gliniewicz was the officer who was shot and killed this morning in Fox Lake, Ill.

Fox Lake Mayor Donny Schmit said that Gliniewicz, nicknamed "G.I. Joe," was a decorated officer and father of four young sons.

"We lost a family member," Schmit said. "Our community is having a very difficult time, and the coming days will be even more difficult as we remember him as a police officer, a father and a member of our community."

Watch the press conference below.

UPDATE 4:20 P.M.: Northwest Herald news editor Kevin Lyons spoke to Shepard Smith about the search for three suspects following the shooting of a police officer in Fox Lake, Ill.

Lyons said that it appears authorities began the search shortly after the shooting occurred at about 8 a.m. local time, so they are hopeful that the suspects are still in the area.

He said that the Fox Lake area is marshy and wooded, which will make the search more difficult.

Lyons said the area also has many summer homes and boathouses that could provide hiding places for the suspects.

Lyons said that they know the identity of the officer who was killed, but do not feel comfortable releasing his name at this time. He did say that he was a veteran officer with multiple children.

A manhunt is underway in northern Illinois for three suspects following the shooting of a police officer.

The officer was fatally shot after a traffic stop in Fox Lake, authorities say.

The officer radioed in Tuesday morning to tell dispatchers he was chasing three men on foot, but communication was lost shortly after, according to Lake County Sheriff's Det. Chris Covelli.

"His backup arrived shortly thereafter and found him injured with a gunshot wound," Covelli said. "The officer has succumbed to his injuries and passed away."

The officer was found stripped of his gun and other equipment.

Police described two of the suspects as white men and said that one suspect is black. They are considered armed and dangerous.

FoxNews.com reported:

Pepper spray was used at some point during the encounter near Rollins Road and Route 159, according to CBS Chicago, which cited sources.

K-9 units, helicopters and armored trucks were involved as police searched for the suspects, all of whom remained at large Tuesday afternoon.

Grant Community High School in Fox Lake was on lockdown while the search was underway.

“A police matter is occurring in the community and for the safety of our students and staff, they have requested we remain locked down,” a statement from the school said, according to Fox32.

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