Police arrest driver of car in Los Angeles crash that killed six, including pregnant mother

Police have arrested a woman who drove the car that ploughed into multiple vehicles in Los Angeles, killing six people including a pregnant woman, her unborn baby, and infant child.

California Highway Patrol says that the suspect, who has not yet been named, was hospitalised with non-life-threatening injuries after the horrific accident on Thursday.

Officials identified the pregnant woman and her unborn child as two of the crash victims on Friday.

Investigators say that the fiery crash was allegedly caused when a speeding car ran a red light at more than 100mph in a 35mph zone in the Windsor Hills area of the city.