LAKE ELSINORE (Wire Service) - An investigation was under way today into the cause of a rollover crash in Lake Elsinore that injured three people, one critically.

The three were riding in a car that was heading north on Interstate 15, about a quarter-mile south of Lake Street, when it rolled down an embankment for unknown reasons on Thursday about 7:15 p.m.

Firefighters used the "jaws of life" to pry open the mangled vehicle and free the occupants, Riverside County Fire Department spokeswoman Jody Hagemann said.

The critically injured occupant and the two others, who suffered moderate to minor injuries, were all taken to an area hospital, Hagemann said.