Latrobe Crime Investigation Unit detectives have released CCTV vision following a robbery at a service station in Morwell last month.

Investigators have been told a man entered the Princes Drive service station just after midnight on Wednesday 24 June.

The unknown man pulled his jacket over his face in a bid to avoid being identified and demanded cash from the male staff member.

The offender stated he had a knife hidden under his jacket however no knife was sighted by employee.

The staff member complied with the demands and handed over an amount of cash.

The offender fled the store and was last seen running north on McDonald Street.

No one was injured during the incident.

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

The man is described as being aged in his mid 20s to early 30s, approximately 175cm to 180cm tall, medium to solid build with brown eyes and short hair.

He was wearing a black jacket with grey sleeves, light brown pants and a black baseball cap with a yellow logo on the front.