Military officials have identified the Louisiana National Guard sergeant who was found dead at Joint Base San Antonio-Fort Sam Houston on Sunday.

Sgt. Kelvonta K. Ellis, 22, was found dead in his room at JBSA-FSA on Sunday, officials told multiple media outlets.

Ellis, a five-year veteran of the Louisiana Army National Guard, was assigned to the 39th Military Police Company, 139th Regional Support Group, officials said.

Ellis was attached to U.S. Army South at Fort Sam Houston at the time of his death.

The circumstances of his death remain under investigation by Air Force Security Forces and Army Criminal Investigation Command, Stars and Stripes reports.

According to the San Antonio Express-News, Ellis is survived by his mother.