Police are appealing for public information following an armed robbery in Altona Meadows on Friday.

Investigators have been told that an unknown woman entered a supermarket on Alma Ave around 9pm.

Armed with a knife, the woman confronted the store attendant and made demands for cash.

A struggle ensued and the attendant received defensive wounds to his hand.

The 56-year-old attendant wrestled the woman to the entrance of the supermarket, where she fled the scene on foot and was last seen heading in a northerly direction along Roseberry Ave.

Detectives from the Altona North Embona Taskforce are investigating and have released CCTV footage of the incident in a bid to identify the woman involved.

The woman police wish to speak to is described as being Caucasian, aged in her mid 30s, between 165-170cm with a solid build.

She was wearing a light blue hooded top and black legging pants at the time of the incident.