Police say the shooting occurred around 5 p.m. CST in the 1000 block of South 10th Street.
This is the second reported fatal shooting involving a Milwaukee police officer in the last three weeks.
Officer Michael J. Michalski, 52, was shot while pursuing a drug suspect July 25, and was pronounced dead at Froedtert Hospital.
Milwaukee police Chief Morales is set to speak with the media at 6:45 p.m. CST. A medical examiner has been called to the scene.
We will update this page as more information becomes available.