Police are hunting a bandit believed responsible for at least four eastern suburbs armed robberies in a 12 hour period.
Members were first called to an armed robbery at a convenience store at the corner of Waverley and Huntingdale Roads, Mount Waverley around 5.30pm yesterday afternoon.
They were told that a man armed with a screwdriver had threatened staff and stolen cash.
Around 1am this morning investigators believe that the same man was responsible for a similar armed robbery at a convenience store at the corner of Waverley and Batesford Roads in Malvern East.
They believe that the offender then returned to the Huntingdale Road business at 1.15am and robbed the store again.
Detectives believe the man then travelled to Glen Waverley and held up a convenience store on Blackburn Road near Meadow Crescent at 2.30am.
In each robbery the offender has used a screwdriver, threatened staff and stolen cash.
He is described as Caucasian, in his 30s, 175-180 centimetres tall, slim build and bald.
At the time of the offences he was wearing a black top and dark pants.