MILWAUKEE -- Milwaukee police are investigating a crash involving one of its vehicles at Miller Park Way and National Avenue.

A Milwaukee police SUV rear-ended a black car that was stopped at a red light at the intersection just before 9 a.m. September 1.

Police say the 22-year-old officer may have experienced a medical emergency shortly before the crash. He was taken to a local hospital for treatment.  

The 35-year-old driver of the black car suffered non-life threatening injuries and was taken to Froedtert Hospital. 

Stay tuned to CBS 58 News for details.