A man working in the basement of an apartment building in Southeast Washington was critically injured Friday when he was trapped for more than 90 minutes after a wall of bricks collapsed, according to the D.C. fire department.

After he was extricated, the unidentified victim was rushed to MedStar Washington Hospital Center with life threatening injuries, according to Timothy Wilson, a spokesman for the fire department.

Wilson said investigators have not determined how or why the bricks fell. It occurred about 2:30 p.m. inside an apartment building in the 1000 block of 13th St. SE.

Members of the fire department’s collapse team responded, along with paramedics who gave the man pain medication and set up an intravenous line. Wilson said MedStar’s “go team” was activated, which means trauma doctors from the hospital responded to the scene to begin treating the man even as crews worked to shore up what remained of the wall.

Wilson said the man was freed from the rubble about 3:30 p.m.