UPDATE: A prisoner has escaped the custody of guards at a hospital in Perth's northern suburbs.
The prisoner was being watched by guards employed by security contractor Serco.
Police have warned that 27-year-old prison escapee Bradley John McIntosh-Narrier may be unpredictable and should not be approached.
The prisoner was at Joondalup Health Campus when he escaped in a car stolen from a woman in the hospital grounds.
He appeared in court this morning but was taken to hospital for medical treatment.
He managed to escape at 1.50pm.
McIntosh-Narrier is believed to be driving a black 2002 Toyota Rav 4, registration 1BFW590.
Regional Investigations Unit officers have called for the public's help to find McIntosh-Narrier.
Anyone who sees the escapee or the stolen car is urged to call police immediately on 131 444.
MORE TO COME