WOODLAND HILLS (CBSLA.com) — Three people were killed and two others were injured, two seriously, in an accident Saturday night that involved four cars, authorities said.

The crash occurred about 9 p.m. and closed a stretch of Ventura Boulevard for several hours as authorities assisted the injured and evaluated the damage, Los Angeles Fire Department spokesman Brian Humphrey said.

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Humphrey said two of the victims were trapped inside a car that caught fire. He said bystanders used fire extinguishers and buckets of water to beat back the flames until firefighters got to the scene on Ventura Boulevard.

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Details of how the crash occurred remained uncertain. At least two people were trapped in vehicles and had to be extricated, Humphrey said.

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