Four people were taken to area hospitals after an elevator fell a couple of floors at a downtown parking garage, a Chicago Fire Department spokesperson said.
First responders were called to 60 E. Delaware Pl. at about 3 p.m.
Elevator mechanics used an adjacent car to rescue the four passengers after their car dropped from the 15th to the 10th floor.
"When an elevator drops like that, like they claim it did, it can be a pretty scary situation," said Battalion Chief Mitchell Crooker. "Thank God that there are safety backups on these elevators and braking systems that they will eventually grab and stop."
Two people went to Northwestern Memorial Hospital and two went to Advocate Illinois Masonic Medical Center.
Mechanics were on the scene at about 3:45 p.m. and shut the elevator down. Other elevators in the building were still in operation.
It was not immediately known if there were any violations against the building or the elevator.