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FOX LAKE, IL - SEPTEMBER 01:  A police officer searches an area for suspects involved in shooting an officer September 1, 2015 in Fox Lake, Illinois.   A manhunt for three suspects is underway after an officer from Fox Lake Police was shot and killed this morning. (Photo by Scott Olson/Getty Images)
FOX LAKE, IL - SEPTEMBER 01:  A police officer searches an area for suspects involved in shooting an officer September 1, 2015 in Fox Lake, Illinois.   A manhunt for three suspects is underway after an officer from Fox Lake Police was shot and killed this morning. (Photo by Scott Olson/Getty Images)

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    Police reviewing video, tips in hunt for cop's killer

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Police reviewing video, tips in hunt for cop's killer

Commander George Filenko says police are using all information at their disposal in the hunt for three suspects wanted in connection with the killing of police Lt. Joe Gliniewicz.

Police reviewing video, tips in hunt for cop's killer

Commander George Filenko says police are using all information at their disposal in the hunt for three suspects wanted in connection with the killing of police Lt. Joe Gliniewicz.