A man died Friday night after being pulled from a burning apartment in Southeast Washington, according to the D.C. police and fire departments.

The fire broke out on the first floor of a two-story building in the unit block of Danbury Street SE, just east of South Capitol Street, according to the fire department.

The cause of the fire was not known, and the nature of the man’s injuries was not disclosed. Police are conducting an investigation of the death, said Officer Sean Hickman, a spokesman for the D.C. police.