A real life tragedy has struck the set of the action film The Expendables 2, starring Sylvester Stallone, Bruce Willis and Arnold Schwarzenegger in his comeback role.

A stuntman died while filming an action scene for the movie in Bulgaria, local newspaper The Sofia Echo reported Friday.

The accident happened Thursday when two men were performing a stunt that involved an explosion in a rubber boat. They were on the Ognyanovo reservoir near Elin Pelin, located 15 miles outside the capital, Sofia.

The second stuntman is hospitalized  -- reportedly unconscious -- but in stable condition after undergoing a five-hour operation.

It’s not known what caused the explosion.

Tom Cruise dangled from a 124-story building in Dubai while filming a scene for Mission Impossible 4 and RadarOnline.com has the death-defying photos.

PHOTOS: Tom Cruise On Set Of Mission Impossible 4

The action hero is known for performing his own stunts, but this takes his risky behavior to new heights – literally!

Cruise was shot filming a chase scene around the exterior of the famous Burj Khalifa, touted as the tallest building in the world, standing at 2,717 feet high.

PHOTOS: Tom Cruise & Jeremy Renner Get Wet For Mission Impossible 4

The Risky Business actor appears to be hanging by nothing more than stunt cables as helicopters hovered ten feet away getting a close-up of all the action.