RELATED: Four killed, three hospitalized in multi-car crash in northwest Fresno
Minutes before the deadly collision, officers tried pulling over 18-year-old Irvin Villarreal, the man who caused the deadly crash.
Detectives caught Villarreal racing his Mustang against a Camaro on Blackstone.
"Because of the sound of the engines the officers used a radar gun to determine these vehicles were traveling at approximately 75 miles an hour," said Fresno Police Capt. Don Gross.
Officers attempted to stop the cars.
The driver of the Camaro pulled over, but Villarreal sped off and officers lost him.
The pursuit was captured on police body cameras.
"Approximately two to two and half minutes later, we receive a 911 call that there has been a three-vehicle collision at Bullard and Palm," said Gross.
Investigators believe Villarreal blew a red light going over 100 miles an hour.
He slammed into a truck and a Mini Cooper, ultimately killing himself and three others.
Surveillance video from a nearby gas station captured the moment Villarreal sped by.
"This could have simply been a citation and everyone could have gone on their way that evening. It didn't have to end in a tragedy like this," said Gross.
Five people were inside the truck.
Three of them died - 27-year-old Christopher Vang, 21-year-old Linda Chang, and her cousin 17-year-old Allison Chang.
The two others are in the hospital - one is still in critical condition.
Officers say the 17-year-old girl inside the Mini Cooper will survive.
"Racing has to stop. A car can be a weapon if used wrong," says Fresno City councilmember Mike Karbassi, who represents District 2 where the crash happened.
He is working on raising $30,000 through a GoFundMe account for the victim's families.
"The day after Christmas having three people, three innocent victims killed is just wrong," Karbassi says.
Officials at Sanger Unified confirm Allison was a Sanger High School senior.
Her family released a statement, saying they are "comforted knowing that Allison's footprint will forever remain with those she crossed paths with."
They'll now be offering counseling to students and staff who need it.