Chicago police later said his condition had stabilized. Police scanner radio reveals the initial response to the stabbing. "There is a knife on the ground," an officer said over the radio.

The 27-year-old officer was found dead in her home Wednesday with a gunshot wound to her head, according to Chicago police. A ...

Chicago police shot and injured a suspect Thursday ... The moment the situation escalated could be heard on police scanner radio as shots were fired. "He's out of the window!