LOS ANGELES — Los Angeles authorities say six people have been injured — five critically — in a three-vehicle crash in the San Fernando Valley.

Officials are investigating the cause of the collision Tuesday in the Reseda-Northridge area.

Fire department spokeswoman Amy Bastman says all six of the injured were hospitalized.

The collision happened just a few miles from a single-car crash that killed all four people aboard last Friday.

Investigators are trying to determine whether the silver BMW, which hit 100 mph, was involved in a street race when the driver lost control.

Two men and two women in their late teens or early 20s died.