Police are searching for an armed man who may have committed up to three robberies overnight.
A service station on Wallgrove Road, Eastern Creek, was hit just before 2.30am on Thursday, November 9.
A man armed with a gun reportedly threatened an employee before stealing cash and cigarettes.
No-one was injured in the incident.
Police believe the same man may also be responsible for two other armed robberies – a Prestons hardware store at 9pm on Wednesday, and a Kemps Creek service station at 2.40am on Thursday.
The suspect is described as being of Caucasian appearance and about 180cm tall.
Anyone who may be able to assist has been urged to call Crime Stoppers on 1800 333 000 or use the online reporting page.