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Three teens from Burbank were killed and two others were injured when a pickup truck crashed down an embankment in a remote canyon northeast of Santa Clarita early Friday morning.

The truck went over the side of the road near Sierra Highway and Rush Canyon Road (map), according to Lt. Rob Hahnlein of the Los Angeles County Sheriff’s Department.

Someone who had been riding in the truck called 911 at about 7:15 a.m., but it was initially unclear when the truck had crashed, Hahnlein said.

Later Friday, the California Highway Patrol stated that preliminary information indicated the crash occurred about 2 a.m., but a 911 call was not received from an "injured and distressed" survivor until about 7:35 a.m.

All of those in the truck were 19-year-olds, the CHP stated.

Zachary Main and Timothy Gorman survived and were airlifted from the scene, according to a CHP collision report that was issued to news media.

Three others -- two men and a woman -- were killed. They were named in the CHP report as driver Ian Bulbenko, Jake Gnasso and April Townshend.

With the exception of Gorman, a Sunland resident, the other four teens were from Burbank, according to CHP.

The 2001 Chevrolet pickup truck, which had been traveling southbound, was found on its left side 200 feet down an embankment at the bottom of Rush Canyon in the Angeles National Forest, according to CHP.

The deceased victims were 2013 graduates of Burroughs High School in Burbank. They were remembered Friday night by hundreds who gathered at the campus for a candlelight vigil.

"I'm glad Tim and Zach are OK, but I'm really hurt because my friends that I grew up with are gone," Michael Viaguez said at the memorial.

The two surviving passengers were wearing seat belts, according to the CHP report. It was not clear if those killed were wearing seat belts.

Alcohol and drugs had not been ruled out as a factor in the collision, according to CHP, which was continuing to investigate.

The crash comes almost a year after five graduates of Burbank and Burroughs high schools were killed in a fiery crash near the 5 Freeway.

"It's so hard to see more of us go down this path," a tearful Samantha Hawkins said Friday night. "I just can't believe more are gone."

Grief counselors will be available at Burroughs High School on Monday, administrators said.

KTLA's John A. Moreno contributed to this report.

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