Police release photos of gas station armed robbery suspects

CHICAGO (WLS) -- Chicago police are seeking the public's help in tracking down two violent armed robbers. They released surveillance photos from the incident a week ago at a gas station at 87th and State.

In one of the pictures, a suspect is seen holding a gun to a man's head. The victim was not shot but told ABC7 a 911 dispatcher ignored his call for help.

The city is now investigating the response.