A collision between a double-decker bus and a city bus in New York on Thursday left at least 18 people injured, media reports said.

The injured people were shifted to hospital with non-life-threatening injuries.

First responders received notice of the crash on the borough’s east side shortly after 7 p.m. Thursday, FDNY Deputy Chief Kevin Murphy told CNN.

“The first two units arrived to find two buses involved in what appeared to be a serious accident, complicated by the fact that one of them was a double-decker bus,” Murphy said at a news conference at the scene.

Ropes and ladders were used to assist passengers with getting off the buses, officials said.

“Any time you have two buses involved you have a significant number of patients that likely need to be treated,” Murphy told CNN. “So seeing that quantity of people right away, I think the units did a very good job getting them off the bus quickly and taken to the appropriate resources.”

The cause of the crash is still not known.