A York Region Transit bus with as many as 20 people on board has collided with another bus in Richmond Hill, police say.

It happened near Yonge Street and Highway 7 at around 4:45 a.m.

A number of people are being assessed by paramedics, however police say their injuries do not appear to be life threatening. According to Newstalk 1010, police say the number of injured parties is eight.

The cause of the collision is under investigation.

The intersection of Yonge Street and Highway 7 is currently closed.