UPDATE, 3:26 PM: The Teamsters security guard killed Monday in Vancouver on the set of the TNT sci-fi drama Falling Skies has been identified as Amrik Singh Gill, 59, of Delta, BC. Gill was crushed to death when an unattended five-ton truck rolled down a hill and pinned him against a tree. The accident occurred while production was prepping for the next day’s shoot.

“Mr. Gill was immediately rushed to Royal Columbian Hospital in New Westminster, but succumbed to his injuries shortly after arrival at hospital,” the BC Coroners Service said in a statement. “Mr. Gill’s family has been notified of his death. On behalf of family members, the BC Coroners Service asks that the media respect their privacy at this difficult time.”

Production was shut down Tuesday and today and will resume tomorrow, according to a production source. The accident is under investigation by WorkSafeBC, British Columbia’s Workers’ Compensation Board, and by the Royal Canadian Mounted Police.

PREVIOUS, TUESDAY, 1:58 PM: A Teamsters security guard was killed Monday night on the set of TNT’s sci-fi drama Falling Skies when he was struck by an unattended truck that rolled down a hill and pinned him against a tree. Production on the show, which is underway on the fifth and final season near Vancouver, was shut down today.

The accident occurred at 8:30 PM in a park in Burnaby, BC, as production was prepping for the next day’s shoot. The name of the security guard, part of Vancouver Teamsters Local 155, has not been made public.

“A five-ton truck parked on a 6% slope had been left unattended,” said Scott McCloy, spokesman for WorkSafeBC, British Columbia’s Workers’ Compensation Board, which is investigating the accident. “The vehicle tailgate was lowered for off-loading of equipment. The truck rolled backwards down the slope and the deceased worker was caught between the tailgate and the tree.”

McCloy said that the Royal Canadian Mounted Police is investigating whether there was anything mechanically wrong with the truck that might have caused the accident.

“There was an unfortunate accident regarding one of our security guards,” Local 155 Secretary Treasurer Ken Marsden told Deadline. He declined to give further details.

“We are deeply saddened by this tragic event, and on behalf of the producers and TNT, we wish to express our heartfelt condolences to the family of the security guard,” a TNT spokeswoman said.

Falling Skies just wrapped its fourth season with a two-hour finale August 31. In July, TNT picked up the alien-invasion series produced by Steven Spielberg and DreamWorks TV for its fifth and final season.