Updated, 4:05 p.m.

One construction worker is dead and another severely injured after a 50,000-pound piece of concrete fell and crushed them at a Montgomery County mall.

Montgomery County Assistant Fire Chief Scott Graham said part of a construction site at the Westfield Montgomery Mall in Bethesda collapsed at about 1:45 pm. The two workers — both men — were caught underneath the fallen concrete in the garage, which is under construction to make way for a new food court and movie theater near Macy's.