WA woman dies after police chase halted

A woman is dead and a young child has been seriously injured after the stolen car they were in crashed after a police pursuit in Perth.

Police engaged the Hyundai Lantra in a pursuit about 9pm on Thursday when it failed to stop.

However, the chase ceased after 10 minutes when the vehicle crossed to the wrong side of Thomas Road in Orelia, in Perth's southern suburbs.

A short time later the car was involved in a crash with another vehicle.

The Hyundai was reported stolen and is believed connected to a number of thefts across Perth.

A female passenger, 23, in the Hyundai suffered critical injuries and later died at Royal Perth Hospital.

The 24-year-old male driver remains in a critical condition in hospital.

A four-year-old boy, who is a relative of the man and the woman, was taken to Princess Margaret Hospital with serious injuries.

The two men in the other vehicle were not injured.