CHICAGO (WLS) -- A Chicago police station in the South Loop was temporarily evacuated Friday morning after a "minor explosion," according to Chicago police..
Police said the explosion occurred in a computer room on the second floor of the 1st district police station at 1718 South State Street just after 3 a.m.
The explosion set off a sensor and an unknown gas, prompting a hazmat response.
The Chicago Fire Department arrived and aired out the room before rendering it safe.
No injuries were reported, according to CPD.
'Minor explosion' prompts temporary evacuation, hazmat response at CPD District 1 station in South Loop: Police