FORT CARSON, Colo. -- The Defense Department says five Fort Carson soldiers were killed when their unit was attacked with an improvised bomb in Afghanistan.

The soldiers were identified Wednesday as Capt. Dale A. Goetz of White, S.D., Staff Sgt. Jesse Infante of Cypress, Texas, Staff Sgt. Kevin J. Kessler of Canton, Ohio, Staff Sgt. Matthew J. West of Conover, Wis., and Pfc. Chad D. Clements of Huntington, Ind.

West was assigned to the 71st Explosive Ordnance Disposal Group. The others were part of the 4th Infantry Division's 4th Brigade Combat Team, which arrived in Afghanistan this summer.

All were killed Monday.