"As the Superintendent stated, an assault rifle was recovered last night from a vehicle seized by police," Guglielmi said in a statement Wednesday afternoon. The police "Gun Lab has expedited the processing of ballistic evidence and the trace of that weapon."



A second weapon was also found, and three people were taken into custody, police said.



"It's just another example of how dangerous this job is," Police Superintendent Eddie Johnson said outside Stroger. "And I think people take it for granted that when police officers come to work every day, they put their lives on the line every single day they get in their car.



"Listen, if they will fire at police officers like that, they they have no thought process in terms of firing at other citizens of this great city," Johnson added. "So we are going to get them."