At least 40 people were injured late Monday when two commuter trains collided in Brazil's Rio de Janeiro state, authorities said.

One of the trains, which had stopped at a station, was rammed from behind by another on the same track, said Rio state Transportation chief Carlos Osorio.

The accident took place in the town of Mesquita, outside Rio de Janeiro, and there were no immediate reports that the injuries were serious, O Globo network said.