WASHINGTON — Authorities say a man was critically injured after jumping from the second-floor of a burning apartment on K Street in northwest Washington.

D.C. fire department Battalion Chief Donald Martin says the man was taken to a hospital with potentially life-threatening injuries Thursday evening. Another three people were rescued by firefighters, two of whom suffered smoke inhalation injuries. A firefighter was also treated for an injured hand.

Firefighters were called to the blaze at the building in the Sursum Corda complex about 6 p.m. and arrived to find heavy fire coming from the top floors of the building. They knocked down the bulk of the fire in about 15 minutes.

The cause of the fire is under investigation.

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