WINNETKA (CBSLA.com) — Authorities Tuesday are on the scene of a collision involving a vehicle that struck a pedestrian.

According to the Los Angeles Fire Department, the incident occurred shortly before 2 p.m. in the 8300 block of Winnetka Avenue.

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Four people sustained injuries in the collision. Two of the victims were transported in critical condition.

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The cause of the crash remains under investigation.

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No further information is available at this time.