SAN DIEGO (AP) – The Marine Corps says a 24-year-old platoon commander from the nation’s capital has died.This  after being injured in a rollover accident involving a light armored vehicle during training at Camp Pendleton, north of San Diego.

Officials on Friday said 1st Lt. Hugh C. McDowell from Washington, D.C., died Thursday morning. Six other Marines were taken to a local hospital with injuries, but none was serious.

Officials are investigating.

McDowell joined the Marine Corps in May 2017. His awards include the National Defense Service Medal and the Global War on Terrorism Service Medal.

The Marine Corps said it was a “tragic accident and we are heartbroken at the loss of a member of our Marine Corps family.”