The squad car and another vehicle collided about 12 a.m. at Dundee Avenue and River Bluff Road, Commander Dan O'Shea said.
The officer was hospitalized with non-life-threatening injuries, O'Shea said.
The driver of the other vehicle, a woman, was treated at the scene for minor injuries.
The cause of the crash is under investigation, O'Shea said.
(Source: Sun-Times Media Wire - Copyright Chicago Sun-Times 2014.)