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Casey Christie / The Californian

Bakersfield police investigate a crash Saturday afternoon on Gosford Road, just south of Stockdale Highway, that killed David Aggio, 54, of Rohnert Park. Witnesses told police the car that hit Aggio's SUV had been speeding. Police said drugs are a factor in the collision.

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Casey Christie / The Californian

Bakersfield Police Sgt. Jeff Saso examines a wrecked Ford Explorer from Saturday's fatal crash on Gosford Road, just south of Stockdale Highway.

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Casey Christie / The Californian

Bakersfield Police investigate a crash Saturday afternoon on Gosford Road, south of Stockdale Highway, where one person was killed and four others were injured.

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Casey Christie / The Californian

Roxanna Sarabia holds two signs near the scene of a fatal accident Saturday afternoon on Gosford Road, south of Stockdale Highway, where one person was killed and four others were injured. She knew a young boy who was killed nearby in a traffic crash.

Drugs are believed to be a factor in a crash that killed a Rohnert Park man and injured four others Saturday morning, ripping off the front end of a car and smashing the driver's side door of an SUV on Gosford Road just south of Stockdale Highway.

The driver of the SUV, David Aggio, 54, was killed instantly in the 11:50 a.m. crash, according to a coroner's office news release.

Police Sgt. Jeff Saso said the driver of a white Honda Civic -- later identified in a news release as 22-year-old Rodolfo Contreras -- was traveling southbound on Coffee Road to the intersection of Stockdale Highway, where Coffee become Gosford Road. Witnesses reported he was speeding.

It's also believe he was under the influence of drugs, police said.

Contreras lost control as he crossed Stockdale Highway and the car hit the center median and traveled into the northbound lanes of Gosford, Saso said. The Civic crashed into the driver's side of a blue Ford Explorer, the impact tearing off the front end of the Civic.

The remainder of the car came to a rest on its roof in the northbound lanes.

A passenger in the SUV and Contreras suffered minor injuries, Saso said. Also suffering minor injuries were the driver and passenger of a Toyota 4Runner struck by debris. They declined medical attention.

All lanes of Gosford Road, both north and south, were closed from Stockdale Highway and Kroll Way for hours. Saso said the intersection would also likely be closed from 6 a.m. to 7 a.m. Sunday for further investigation.

A woman stood by the intersection holding two signs, one that read "Slow Down," the other "Save A Child." The woman, Roxanna Sarabia, said she knew an 11-year-old boy who was killed in a crash not far from the intersection, and she always carries the signs with her as an opportunity to remind motorists to drive safely.

Anyone with information about the crash is asked to call BPD Officer Nicolas Gospich at 326-3967.