Police are appealing for public assistance following an armed robbery in Keilor East earlier this month.

The victim and five friends had been at a party on Keilor Park Drive celebrating a friends 18th birthday on Saturday 17 May.

The group of six left the party around 11.30pm before making their way down the walking track beside the Old Calder Highway, heading towards Keilor Village.

During their journey the group of six high school students were approached by the large group of around 15 males who targeted one and chased away the others.

A man held a knife to the 17-year-old victim’s throat and demanded his property.

A wallet and i-Phone were stolen whilst other offenders emptied his pockets.

During the ordeal a bottle was smashed over the victims head causing bruises and grazes.

He soon managed to break free and run from the scene before calling police.

The main offender is described as being a man of Pacific Islander or Asian in appearance, olive skin, dark coloured eyes, black short hair, fine moustache and around 17 to 20 years of age.

The other men involved in the incident are described as Asian or Islander in appearance.

Police have released the below FACE image of a man who they believe may be able to assist with their enquiries.