WATCH: Dump truck overturns onto car, burying it in stones

Manchester, New Jersey - A dump truck overturned and spilled its load of stone on top of a car in New Jersey, and authorities say the driver had to be dug out to be rescued.

Police in Manchester Township said that 24-year-old Andrea Penna, of Whiting, was trapped underneath stone and debris after the roof of her car collapsed on top of her Monday (May 15).

Crash under investigation

Penna and her passenger sustained non-life threatening injuries, as did the driver of the dump truck. The passenger of the car was able to get out on her own.

Police say the truck struck the Nissan as it was making a left turn and then overturned onto the car's roof, spilling its load on top.

Watch: Overturned dump truck triggers NJ rescue

State police, state department of corrections employees and other motorists stopped to dig the car out.

The crash is under investigation.

This story has been corrected to show that the second woman in the car got out on her own.