Three people were taken to the hospital after a Montgomery County crash Monday involving a Ride On bus and 11 other vehicles, according to police and fire officials.

Police were called to the crash near Rockville Pike and Nicholson Lane at about 1:40 p.m. Montgomery County police spokeswoman Officer Janelle Smith said the bus hit the cars.

The bus was still being examined Monday afternoon, and the cause of the crash has not been determined, Smith said.