A deadly crash is under investigation after a motorist plunged into a wash in the San Gabriel Valley overnight.
The crash occurred in the Rio Hondo wash near the eastbound 10 Freeway at Santa Anita Avenue in El Monte just before midnight Wednesday.
Video showed the vehicle landed upside down on what appeared to be a raised support structure in the wash.
The victim was ejected from the vehicle and located by Los Angeles County firefighters on the ground below.
The unidentified motorist was pronounced dead at the scene.
Responders also searched the wash in case there were any other victims.
It was unclear if speed or alcohol were factors in the crash.
