The officer was taken to the hospital to be treated for injuries that police said he is expected to survive.
The shots were fired in the area of Kossuth and Shelton streets about 8:50 a.m., police said. A compact, white, four-door car fled the scene and in the process struck the officer.
Detectives are investigating. Anyone with information that may help them is asked to call the police tips line at 203-576-8477 (TIPS).