Port Phillip Crime Investigation Unit detectives are appealing for public assistance to identify two men following a robbery in St Kilda on Sunday 23 March.
Investigators believe that two male offenders, one walking a chestnut-coloured Staffordshire Terrier puppy on a lead, approached a man on Greeves Street about 10.40am.
The offenders made demands for the victim's motorbike and mobile phone.
One of the offenders produced a knife and lunged towards the victim.
The victim was not physically injured and took off on foot, attempting to flag down passing vehicles for assistance.
The offenders and the dog were last seen walking along Greeves Street, turning right into Vale Street.
Investigators have released an image and CCTV footage of two men they wish to speak to in relation to the incident.
The first man is perceived to be middle eastern in appearance, wearing all black and a balaclava.
The second man is perceived to be middle eastern in appearance, wearing a tan/brown hoodie, black pants and white shoes.
Anyone who witnessed the incident or has information regarding the identity of the two men is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au
