UPDATE: Officials at Fort Bragg have released new details about a crash that killed one soldier and injured 12 others on Wednesday.

They said 34-year-old Staff Sergeant Jacob Hess of Belton, Missouri died after a training incident at the Joint Readiness Training Center at Fort Polk, Louisiana.

Hess was assigned to the 97th Civil Affairs Battalion, 95th Civil Affairs Brigade (Special Operations) (Airborne) at Fort Bragg, North Carolina.

Officials at Fort Bragg said he was posthumously awarded the Meritorious Service Medal.

They said the other wounded soldiers suffered non-life threatening injuries.

They said they were assigned to the 95th CA Brigade, 7th Special Forces Group (Airborne) at Eglin Air Force Base, Florida and the 72nd Military Police Academy, Nevada Army National Guard in Las Vegas.

They said all the service members were evaluated and screened for injuries.

They said the incident remains under investigation by the US Army Combat Readiness Center, headquartered in Fort Rucker, Alabama.

The Nevada National Guard says three Nevada Army Guard soldiers were injured in the crash.

They said 30-year-old Staff Sergeant Damian Jorgensen of Las Vegas, 27-year-old Spc. Patrick Kelly of Henderson and 23-year-old Spc. Brennan Garcia of Las Vegas were among the injured.

They said none of the injuries were life threatening. 

The Nevada National Guard says the crash happened when several military vehicles failed to make a turn on uneven terrain during an early-morning training on Wednesday.

They said investigators are looking into whether proper safety procedures were followed.

They said all of the 72nd soldiers are set to return to Nevada when the unit's training concludes on May 25.

(The 1st Special Forces Command, Airborne, Public Affairs Office and Nevada National Guard contributed to this report).

The Nevada National Guard says an Army Reservist was killed and four Nevada Army National Guardsmen were injured in a military crash in Fort Polk, Louisiana on Thursday.

They said the rollover crash happened around 3 a.m. during training at the Joint Readiness Training Center.

The name of the person who died not being released at this time.

The four who were injured were members of the 72nd Military Police Company, Nevada Army National Guard in Las Vegas. They said two are being held at a military hospital but non of the injuries are life threatening.

The names of those injured are also not being released.

The Nevada National Guard says the cause of the crash is under investigation.

"Safety is paramount in all that we do," said Brig. Gen. William Burks, Nevada National Guard adjutant general. "We train as we fight and unfortunately, accidents occur during realistic training in dynamic environments. Our sympathies go out to the family of the individual that was killed. We are closely monitoring this situation and hope for a speedy recovery to those who were injured."

(The Nevada National Guard contributed to this report).