Police are appealing for public assistance after a woman robbed a convenience store in Northcote early this morning.

Police have been told a woman armed with a knife entered the store on Victoria Road about 3.30am.

She approached the attendant and made demands for cash before stealing the till containing an amount of money.

The offender then fled the scene and was last seen running on Separation Street.

She is described as Caucasian in appearance, 165cm tall with a medium build and was wearing a white beanie, blue jacket, track pants and black runners.

The victim was not injured.

Investigators are keen to speak to any witnesses or anyone in the area at the time of the armed robbery.