According to the La Verne Police Department, officers tried to conduct a traffic stop on a red Acura Integra about 8:50 p.m. after its driver failed to stop at both a stop sign and a red traffic light in the area of White Avenue and Arrow Highway.
The Integra sped away, investigators said, and after a pursuit of about 3/4 of a mile the car slammed into a black Toyota Corolla near White Avenue and College Lane.
"The driver of the red car was speeding up White, going northbound, and basically T-boned the black car," said a witness who gave his name only as Nathan. "I guess there was a chase that was just starting down by the Shell gas station."
Firefighter paramedics responded to the scene and extricated two people from the Corolla and three from the Acura. All five individuals were transported to a hospital, where the two drivers died, police said.
The surviving victims were listed in critical condition.
Authorities identified the driver of the Corolla as 68-year-old Marlet Reyes of La Verne. The other motorist's name was not immediately released.