PACOIMA ( — Authorities say one person was killed when a vehicle overturned in Pacoima on Saturday.

The crash was reported just before 5:30 p.m. on Laurel Canyon Boulevard, where one woman was pronounced dead.

READ MORE: Karen Bass Officially Kicks Off Her Run For Mayor Of Los Angeles At Saturday Event

Firefighters said another woman was taken to the hospital and is in grave condition.

READ MORE: Police Investigating Shooting In South Los Angeles

The CHP believes the car may have flipped over an interchange between the 118 and 5 Freeways.

A SIG Alert was issued just before 6 p.m. affecting the northbound 5 and the eastbound 118.

MORE NEWS: Strike Averted: IATSE And AMPTP Have 'Basic Contract' Agreement, Per Officials With The Theatrical Stage Employees Union

The cause of the crash remains under investigation.