SAN DIEGO -- A San Bernardino County man was under arrest Tuesday on suspicion of crashing an SUV while drunk on Interstate 5 near Oceanside, leaving an 18-year-old passenger dead and injuring two others.

Greg Maynard, 30, remained hospitalized Tuesday afternoon with injuries he suffered in Monday night's crash, which killed fellow Rancho Cucamonga resident Mary Lu Vasquez.

Maynard allegedly was speeding to the north about 9 p.m. when he lost control of the 2001 Lincoln Navigator he was driving just south of Basilone Road, according to the California Highway Patrol.

The vehicle swerved to the right off the roadway and overturned on an embankment, rolling over several times and ejecting Maynard and Vasquez, CHP public affairs Officer Tom Kerns said. Vasquez died at the scene.

Two other 18-year-old passengers, Lisa Moreno of Pomona and John Zarragoazon of Rancho Cucamonga, suffered serious injuries.

Medics took them to a Mission Viejo hospital along with Maynard, who was admitted and later arrested on suspicion of felony drunken driving and vehicular manslaughter.