CHP cruiser
A California Highway Patrol cruiser. Photo by Chris Stone

A vehicle flipped onto its side in a nine-car pileup on Interstate 8 in La Mesa, injuring one person.

The crash closed the first and second lanes of westbound I-8 near Lake Murray Boulevard around 7:30 a.m., according to the California Highway Patrol.

The agency’s traffic reporting system said a three- to four-vehicle accident caused several more cars to pile up, flipping one on its side.

One person suffered unknown injuries.

The CHP issued a SigAlert.