Marine's girlfriend speaks out after he and 3 others are killed in fiery crash on freeway in Downey

DOWNEY, Calif. (KABC) -- A U.S. Marine's girlfriend spoke out after he and three of his fellow servicemen were killed in a fiery crash on the 5 Freeway in Downey.

The off-duty single-car crash happened early Saturday morning when the driver of the Marines' vehicle lost control crashed into a bridge abutment just west of the 605 Freeway.

All four Marines were stationed at Camp Pendleton and coming home from a concert in L.A. at the time of the crash.

All four died at the scene.

"He promised that they would be safe and that he loved me, and he called me his sweetheart. when they told me, my whole world exploded because I lost my other half," said Jacinda Stage to ABC7's sister station KGTV, who is the girlfriend of Joshua Moore, Jr.

Moore died alongside Daniel Nichols, Rodrigo Gomez and Jose Martinez.

Four Marines stationed at Camp Pendleton were killed in a violent crash early Saturday morning on the 5 Freeway in Downey, officials confirmed.

The cause of the crash is under investigation.