A Fort Riley soldier was sentenced to more than eight years in prison after he pleaded guilty to voluntary manslaughter in connection to the killing of a fellow soldier assigned to the Kansas base, military officials said.

Spc. Jalen Thomas, 21, pleaded guilty Friday to the lesser charge of manslaughter after the Army charged him with murder, manslaughter, assault and domestic violence, according to a statement from the 1st Infantry Division and court documents.

He was arraigned in the Army’s 3rd Judicial Circuit on Nov. 2, according to online court records.

A military judge sentenced him to 100 months in prison, a reduction in rank to E-1 and a dishonorable discharge. The sentence was consistent with the terms of the plea agreement, according to a statement from the 1st Infantry Division.

He was accused of stabbing to death Sgt. Stacy Subotich, 30, on Aug. 6 in Junction City, a town about 5 miles from Fort Riley, according to local police reports. At least two other people were injured in the incident.

Junction City police initially arrested Thomas, but the case was later turned over to the Army Criminal Investigation Division and the charges were filed through the military justice system.

Thomas, who is from Brandon, Fla., enlisted in the Army in June 2019 and was assigned to Fort Riley in February. He served in the 1st Infantry Division Sustainment Brigade, according to court documents.

Spc. Jalen Thomas, a 21-year-old soldier assigned to Fort Riley, Kan., was sentenced Dec. 2, 2022, to more than eight years in prison after he pleaded guilty to voluntary manslaughter in connection with the killing of a fellow soldier, according to military officials and court documents. (U.S. Army)