An Army soldier from San Francisco was killed in Afghanistan on Christmas Day, according to the U.S. Department of Defense.

Staff Sgt. David H. Gutierrez, 35, died Friday after suffering injuries when insurgents attacked his dismounted patrol with an improvised explosive device near the village of Howz-e Madad. He was taken to Kandahar Air Field where he was pronounced dead.

Gutierrez was assigned to the 2nd Battalion, 1st Infantry Regiment, 5th Brigade, 2nd Infantry Division in Fort Lewis, Wash.

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