One U.S. Marine was killed and 18 other service members were injured on Thursday when a vehicle rolled over during routine training at Camp Pendleton in San Diego, the Associated Press reports.

Further details on the accident—including the identity of the deceased Marine, the type of vehicle involved and the extent of the injuries suffered by the wounded—were not immediately available.

“The command’s priorities are to take care of the Marines, sailors and families of the unit,” said a Marine spokesperson in a statement. “We want to ensure the Marines and their family members are being provided for during this difficult time.”

The crash, which occurred at around 2 p.m., is currently being investigated, KSWB-TV reports.

In November 2013, four Marines were killed at Camp Pendleton when a grenade round exploded during a routine sweep of unexploded ordinance.

[Image via AP Images]