FOX LAKE, Ill. -- Investigators are combing neighborhoods north of Chicago on Tuesday in a massive manhunt for suspects accused of shooting dead a police officer.
Authorities in Illinois are still looking for three suspects in the fatal shooting of a sheriff's deputy in Fox Lake, Sgt. Christopher Covelli with the Lake County Sheriff's department told CNN.
Covelli said that an earlier report, from Illinois State Police, that one suspect had been captured was inaccurate.
The slain officer was identified as Lt. Joe Gliniewicz, Fox Lake Mayor Donny Schmit told reporters. Gliniewicz was a 30-year veteran of the police force, the mayor said.
The shooting happened about 10 minutes before 8 a.m., after the officer sent word over his radio that he was pursuing three suspects on foot, Lake County Sheriff's Sgt. Christopher Covelli said.
The slain officer worked for Fox Lake Police, a community of about 60,000 people in Lake County, about 60 miles north of Chicago. The hunt for the suspects -- described by the officer as two white men and one black man -- put at least four schools on lockdown and left people barricaded in their homes in Lake County, Illinois.
Law enforcement on foot and in helicopters were combing the area, according to the Sheriff.
Canine units have also been dispatched. U.S Marshal officials and agents with the Federal Bureau of Investigation and Bureau of Alcohol, Tobacco, Firearms and Explosives are assisting.
No-fly zone over search area
Residents have been asked to remain inside their homes and businesses, officials said
"We asked residents to report any suspicious activity they happen to see, whether they think it's something minor or major and to keep an eye out for these three individuals," Covelli said.
The Federal Aviation Administration has issued a no-fly zone that covers two nautical miles over the search area.