The shootout began around 5:05 p.m. when Cicero police tried to stop a car in the 3900 block of South Cicero Avenue, Chlada said. The driver sped off but the officers boxed in his car on the southbound Cicero exit of the Stevenson. The driver got out and fired several rounds at two officers, then ran north on Cicero and fired at another officer chasing him, Chlada said.