UPDATE 9:55 p.m.:
Two people who died at the scene of a fatal crash in Temecula were identified as senior citizens from Yorba Linda.
Amar Jain, 74, and Cheryl Jain, 66, were both pronounced dead at the scene of the crash, according to the Riverside County Coroner's office.
Amar Jain was the driver and was trapped in the sedan; he was pronounced dead at 3:18 p.m.
Cheryl Jain was the passenger in the car; she was pronounced dead at 3:22 p.m.
This story was modified at 5:50 p.m. Oct. 20, 2012 to add information.
Update 4:40 p.m.:
Two people in an SUV died at the scene of a crash that tied up traffic into Old Town and was expected to keep Jefferson Avenue at Rancho California Road shut down for hours.
"It's just a whole … still in progress investigation," Riverside County sheriff's Sgt. John Magnan said at the scene.
A motorist in a silver vehicle that struck the SUV suffered "major" injuries, the sergeant told Patch.
According to Magnan, the blue SUV was turning on Jefferson when the westbound silver vehicle struck it.
Two other vehicles were somehow involved in a crash and investigators were trying to determine whether the silver vehicle continued on to hit them, the sergeant said.
Motorists were asked to stay off southbound Jefferson and if traveling to Old Town, to take Ynez Road and turn on Santiago Road or just use the Old Town freeway exit.
On a side note, a pickup truck driver who apparently tried to jump a concrete divider and avoid the stalled traffic at the crash site was ticketed for an alleged illegal U-turn.
A multi-vehicle crash in Temecula Saturday left two people dead and one seriously injured, officials said.
A motorist killed in the crash -- reported on Jefferson Avenue, near Rancho California Road shortly after 3 p.m. -- was trapped in a vehicle and emergency crews were working to extricate that person's remains.
Another person died at the scene, Cal Fire's Melody Hendrickson said.
A third person was taken to an area hospital with serious injuries, according to Hendrickson.
--Daniel Lane contributed to this report.