Around 7:23 p.m., police say a Chicago cop car was traveling westbound in the 2800 block of Harrison Street, crossing California Avenue when they struck a box truck heading eastbound on Harrison.
The Chicago cop car came to a rest after striking another squad car on the same block, police said.
The two officers were transported to a nearby hospital in good condition. The two occupants of the box truck were taken to Stroger Hospital in good condition.
No further information was immediately available.