A State Department security officer was killed Sunday during a mortar or rocket attack at a U.S. base near Baghdad International Airport (search), the U.S. Embassy announced.

Ed Seitz (search), an agent with the State Department's Bureau of Diplomatic Security, was killed about 5 a.m. at Camp Victory (search), embassy spokesman Bob Callahan said. Camp Victory is the headquarters of the U.S.-led coalition's ground forces command.

An undetermined number of people were injured in the attack but none with life-threatening injuries, Callahan said.

Secretary of State Colin Powell, who is on a tour of Asia, said, "The Department of State and I mourn the loss of one of our own today in Baghdad."

"Ed was a brave American, dedicated to his country and to a brighter future for the people of Iraq," Powell said. "Ed's death is a tragic loss for me personally, and for all of his colleagues at the Department of State."

"Ed Seitz died in the service of his country and for the cause of liberty and freedom for others. There is no more noble a sacrifice."