A suicide bomber in eastern Afghanistan killed three troops, a U.S. aid worker and an Afghan interpreter on Wednesday, CNN reported.

According to the Department of Defense, the attack occurred when an insurgent detonated a suicide vest in Sarkowi, Kunar Province.

Army Command Sgt. Maj. Kevin J. Griffin, 45, the senior enlisted soldier of the 4th Brigade Combat Team, 4th Infantry Division from Fort Carson, Colo., died in the explosion. Also killed were Army Maj. Thomas E. Kennedy, 35, of West Point, N.Y., Air Force Maj. Walter D. Gray, 38, of Conyers, Ga., and USAID Foreign Service Officer Ragaei Abdelfattah.

Several troops were also injured in the attack, but details were not released.

A 24-year Army veteran, Griffin had been deployed to Afghanistan in March after serving three tours in Iraq. He was posthumously awarded a Bronze Star and a Purple Heart, the Casper Star Tribune reported.

Kennedy joined the Army in 2000 and also received the Bronze Star. At the time of his death, he was serving on his third deployment, including two tours in Iraq.

Gray was an Air Liaison Officer and flight commander
attached to Fort Carson through the 93rd Air Ground Operations Wing at Moody Air Force Base, the Colorado Springs Gazette reported. Although commissioned as an officer in 1997, he was previously an enlisted Airman and one of the Air Force's first career Air Liaison Officers.

Abdelfattah recently began his second voluntary tour in Afghanistan to continue supporting the country's stability and long-term development.

"With the work of people such as Ragaei, the civilian surge we launched in Afghanistan in 2009 has made a tremendous impact, strengthening the capacity of the Afghan Government and laying a foundation for long-term sustainable development. Though we are shocked and saddened by this loss and will miss Ragaei, our efforts will continue," Secretary of State Hillary Clinton said.

Information about the slain interpreter was not available.

CORRECTION: An earlier version of this article misspelled the name of Army Command Sgt. Maj. Kevin J. Griffin. This article has been modified to reflect the correction.

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