Illinois officer shot, killed; manhunt for suspects continues

Police in northe Illinois say a manhunt is underway after an officer was shot and killed.

Lake County Major Crimes Task Force Cmdr. George Filenko tells WBBM radio that it happened Tuesday moing in Fox Lake, 55 miles north of Chicago.

UPDATE: Authorities searching for 2 white men, 1 black man after Fox Lake officer fatally shot http://t.co/dELpquD3wU pic.twitter.com/XIuRcKYVUA — WGN TV News (@WGNNews) September 1, 2015

Sources are telling WBBM that the officer's gun and pepper spray were taken. 

The officer, who has not been named, radioed in to dispatch that he was running after three suspects after looking into "suspicious activity," WBBM reported. 

Police then lost contact with the officer.

The officer's backup arrived, finding him wounded. The officer died at the scene.

The search has prompted the lockdown of Grant Community High School and disrupted Metra commuter rail service on the Milwaukee District North Line.

Superintendent Christy Sefcik says the school is keeping children and staff away from windows and out of sight. She says school officials were told that police were searching for several "armed individuals."