A collision between a car and a bus has sent 13 people to the hospital, Chicago Fire Department officials said. 

The collision, which occurred near the corner of Michigan Avenue and Adams Street, happened at approximately 9:30 p.m. on Saturday night. 

Patients went to Mercy, Northwestern, and Rush hospitals, according to the fire department. 

20 people refused treatment at the scene of the crash, which is still being investigated. 

Published at 9:51 PM CDT on Jun 17, 2017