A teenager is in hospital after he allegedly stole a white van and crashed into a power pole in Forrestfield last night.
The 17-year-old Cloverdale youth was taken to Royal Perth Hospital with a broken leg after the crash, which happened near the intersection of Abernethy Road and Grogan Road about 11.45pm.
Earlier in the night, police allegedly saw the van crash through the gates of an Ascot business, cross two lanes of traffic on Great Eastern Highway and speed off.
Officers chased the vehicle but the pursuit was aborted when it became too dangerous.
Police lost sight of the van and the crash happened about 20 minutes later.
No charges have yet been laid against the teenager but inquires are continuing.