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A window washer inside D.C.’s Walter E. Washington Convention Center was critically injured in a fall Friday morning.

The man fell about 30 feet and landed on a ledge inside the convention center, D.C. Fire and EMS department said. The fall happened around 10:30 a.m.

Rescue crews lowered the man to the ground using a rope system.

The man has been taken to a hospital with life-threatening injuries.

Update hi-angle rescue DC Convention Center 801 Mt. Vernon Square NW. have lowered the patient using stokes rescue basket and rope system. Adult male patient will be transported with critical life threatening injuries.

— DC Fire and EMS (@dcfireems)

²ÝÝ®´«Ã½’s Luke Garrett contributed to this report.