By M. Alex Johnson, Staff Writer, NBC News
Four U.S. Marines were killed Wednesday when unexploded ordnance blew up after a training accident at Camp Pendleton, Calif., military officials said.
The deadly accident occurred during a "range maintenance operation," the Marine Corps said in a statement. It gave no details and said none of the victims would be identified pending notification of their families.
A U.S. military official told NBC News that the Marines had just finished taking part in exercises about 11 a.m. (2 p.m. ET) when unexploded ordnance detonated.
"We offer our heartfelt prayers and condolences to the families of the Marines lost today in this tragic accident," the Marine Corps statement said.
Camp Pendleton, in southern California about 40 miles north of San Diego, is the Marine Corps' main amphibious training base on the West Coast and is home to the I Marine Expeditionary Force.
Jim Miklaszewski and Courtney Kube of NBC News contributed to this report.
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Four U.S. Marines were killed Wednesday when unexploded ordnance blew up after a training accident at Camp Pendleton, Calif., military officials said.
The deadly accident occurred during a "range maintenance operation," the Marine Corps said in a statement. It gave no details and said none of the victims would be identified pending notification of their families.
A U.S. military official told NBC News that the Marines had just finished taking part in exercises about 11 a.m. (2 p.m. ET) when unexploded ordnance detonated.
"We offer our heartfelt prayers and condolences to the families of the Marines lost today in this tragic accident," the Marine Corps statement said.
Camp Pendleton, in southern California about 40 miles north of San Diego, is the Marine Corps' main amphibious training base on the West Coast and is home to the I Marine Expeditionary Force.
Jim Miklaszewski and Courtney Kube of NBC News contributed to this report.
Watch the top videos on NBCNews.com