PARIS, April 18 (Xinhua) -- An accident involving two mini buses carrying disabled children and another vehicle on a motorway between Lille and Dunkerque, northern France, has left at least 18 kids injured, local media reported.

The two mini buses collided with the car Wednesday morning, causing the injuries including three in serious situation, according to the report.

50 firefighters were on the site helping evacuate the victims along with a helicopter.

The cause of the collision was not immediately identified.