Update 10:58 p.m.
A woman killed when the pickup truck in which she rode went down an embankment and crashed -- overturning the trailer it hauled -- was identified as a 70-year-old Las Vegas woman.
Nancy Gass, the passenger in the pickup, was pronounced dead at the scene of the crash, caused by a tire blowout, according to the Riverside County Coroner's office.
Update 2:22 p.m.
A blown tire may have caused the fatal crash on I-15, just south of Corona, Patch learned.
The right front tire tread came apart, Patch observed at the scene.
Traffic was backed up to Lake Elsinore for miles two hours after the crash.
Update 1:03 p.m.:
The couple was traveling in the far right lane when the crash occurred, Patch learned.
Update 12:44 p.m.:
All lanes of the northbound 1-15 Freeway in Temescal Canyon, just outside Corona, were reopened; traffic remained backed up for miles in both directions.
Update 12:34 p.m.:
A woman on her way home from her San Diego vacation was killed Sunday when a truck pulling a 5th wheel trailer went off the Interstate 15 and overturned -- also injuring a man -- in Temescal.
The man was taken to an area hospital by ambulance, Patch learned at the scene.
The two were returning to their Las Vegas home, following a vacation in Mission Bay, Patch learned.
The woman was the front passenger in the truck; the man was driving.
She was not ejected, Patch learned.
A truck toting a trailer Sunday went off the northbound Interstate 15 and overturned, killing at least one person and forcing the shutdown of lanes for a time.
The crash at the Temescal Canyon exit ramp was reported at 11:09 a.m., according to the California Highway Patrol.
Witnesses said the trailer ended up upside down on the embankment, the CHP reported.
The Temescal Canyon offramp on the northbound side was also shut down, officials said.
Crews were working to get a middle lane opened as soon as possible, according to the CHP.