Two men were attacked and robbed while sleeping in their car in Kambah in the early hours of Wednesday morning.
About 5.00am, four or five people approached the car, which was parked in the carpark of Reynell Place, and assaulted one of the victims with a taser.
Both men were then dragged from the car and attacked by the group, who stole their keys, wallets and phones before running away.
The offenders are all described as being between 19-22 years of age, and were wearing rags over their faces.
A woman in the group was described as being approximately 5’3″ in height with brown hair and wearing a grey hoodie.
A male offender was described as wearing a black hoodie and light grey track pants.
Police urged anyone with information to contact Crime Stoppers on 1800 333 000, quoting reference number 6177378.