Five of six soldiers killed in a helicopter crash in Afghanistan earlier this week were from Fort Riley.

On Monday, a U.S. Army Black Hawk UH-60 helicopter crashed in southern Afghanistan. The crash left six American service members dead. Another person on board was injured, but survived.

In Washington, an official initially said the helicopter had experienced engine failure, but later said it wasnt clear whether that was the case. According to initial reports, the troops had mechanical problems and came under fire after the crash. Its not known whether any of the casualties were the result of enemy fire.

Morans office released the following statement:

“Americans will be forever indebted to these brave soldiers who laid down their lives for our country,” Sen. Moran said. “As we pay tribute to their service and sacrifice, we are reminded that freedom is not free. I ask all Kansans to join me in remembering their families, friends and the Ft. Riley community in our thoughts and prayers.”

The five Fort Riley soldiers were identified as Chief Warrant Officer 2 Randy Billings of Heavener, Okla.; Chief Warrant Officer 2 Joshua Silverman of Scottsdale, Ariz.; Sgt. Peter Bohler of Willow Spring, N.C.; Sgt. 1st Class Omar Forde of Marietta, Ga.; and Spc. Terry Gordon of Shubuta, Miss.

A sixth soldier, based in Vilseck, Germany, was identified as Staff Sgt. Jesse Williams of Elkhart, Ind.