UPDATE: Police have confirmed the stolen ute was recovered this afternoon after a chase that ended in the Guildford area.
A statement said a 24-year-old man was assisting police and their inquiries would continue.
EARLIER: A REPORTED police chase has ended in a serious crash on James Street in Guildford.
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READ NOWMain Roads WA shut down traffic in both directions in the aftermath of the crash, however the crash was cleared within an hour.
A police spokesman confirmed there had been a chase in the area, but would not be drawn on whether it was related to the assault of an off-duty police officer this morning.
He said one person was in custody following the crash.
A St John Ambulance spokeswoman said a woman in her 70s, who they believed was a passenger in the stolen vehicle, had been transported to St John of God Midland.
A post on the WA Revenue Raiser’s Facebook page claimed police officers involved in the crash were chasing a white ute.
Another post on the page claimed the ute had been towed from the scene.
MORE: Police hunt for man in white ute after off-duty police officer attacked in Girrawheen