An NCO assigned to the 1st Infantry Division was found dead at his home in Junction City, Kansas, on Saturday, Army officials said.

Sgt. 1st Class Kevin Johnson was found unresponsive by a friend who called 911, according to a Tuesday release from 1st ID and Fort Riley.

Johnson, 46, was pronounced dead by first responders. The cause of death was not released. Johnson’s death is under investigation by the Junction City Police Department.

He was an artillery mechanic with Battery F, 1st Battalion, 5th Field Artillery Regiment, 1st Armored Brigade Combat Team.

"We are deeply saddened by the loss of our great teammate, Sgt. 1st Class Johnson," Lt. Col. Richard J. Ikena Jr., commander of 1st Battalion, said in the release. "Our team is rallying to support Sgt. 1st Class Johnson's family, teammates and friends through these challenging times."

Johnson's home of record is Sumter, South Carolina. He joined the Army in 1993 and he was assigned to Fort Riley in 2014.

His deployments include South Korea in 1998; Kuwait in 2002; Iraq in 2003, 2007 and 2010; and again to South Korea in 2016, according to the release.

Johnson’s awards and decorations include the Bronze Star Medal, Army Commendation Medal, Army Achievement Medal, Presidential Unit Citation Award, Meritorious Unit Award, Army Good Conduct Medal, National Defense Service Medal, Armed Forces Expeditionary Medal, Iraq Campaign Medal Campaign Star, Global War on Terrorism Expeditionary Medal, Global War on Terrorism Service Medal, Korea Defense Service Medal and Driver & Mechanic Badge.