Bauer, a 31-year veteran, encountered the individual and was shot several times, Johnson said. He had a wife and daughter, the superintendent added.
“It is a difficult day for us, but we will get through it,” Johnson said outside the hospital where Bauer was taken.
A suspect is in custody.
“Commander Bauer stood for the highest ideals of our police department and our city,” Mayor Rahm Emanuel said.
The shooting took place about 2:30 p.m. near an Illinois government office building in Chicago’s Loop area.
He was the commander of the 18th district on the Near North side, which includes some prominent neighborhoods, WLS reported.