Seven people were hospitalized after two shuttle buses crashed early Saturday at O’Hare International Airport.

At 2:48 a.m., a bus driven by a 29-year-old woman collided with another bus stopped in front of Terminal 5, according to Chicago police. The seven people transported to hospitals all had injuries that were not life-threatening.

The woman was cited for negligent driving, police said.

Chicago police officers at the airport were investigating.