MUMBAI: An Australian stuntman, who suffered serious brain injuries while filming Warner Bros Hangover: Part Two in Thailand, has initiated legal action against the studio.

Scott McLean was doubling for Ed Helms during a car-chase sequence when his head smashed into a moving vehicle, leaving him with a huge gash over the right side of his head and flesh torn from his skull.

The stuntsman, who according to his legal representatives is likely to suffer "permanent brain and physical injuries", is suing for unspecified damages, it is understood.

The clip he was filming shows the movie‘s stars being chased in a taxi by two Russian gangsters on motorbikes. In his lawsuit, the stuntman claims that the action sequence needed "precision and timing" but stunt coordinator Russell Solberg changed the timing just after they had started performing the stunt.

"Solberg commanded to the driver of the automobile in which plaintiff Scott McLean was a passenger, that the speed of his vehicle be increased significantly to a speed unsafe for the stunt, thus resulting in a major collision," McLean claimed in his lawsuit.

In a statement Warner Bros said, "We were shocked and saddened by this accident and have been working closely with Scott and his family throughout his treatment and recovery. We have offered continual support since the accident occurred and we are working together to try and resolve any outstanding issues."