A man died Tuesday afternoon after the roof of a Brigham City Kmart collapsed on him.

The man, who was not immediately identified, was among four people who were conducting a planned demolition of the Kmart near 990 S. Main St. when about 40 percent of the roof came down, Brigham City Emergency Services Director Jim Buchanan said.

Buchanan was not sure if the collapse was on time with their plans or premature.

The man was the only one inside the building when the roof collapsed.

The others called for help about 3 p.m., and more than 35 emergency responders dug through the rubble with hands and shovels to find him.

About two hours later, they found his body.

Buchanan said Tuesday night that the accident would be further investigated by the Occupational Safety and Health Administration.

mmcfall@sltrib.com

Twitter: @mikeypanda