Gold Coast detectives have released CCTV as part of investigations into an armed robbery at a Labrador business on 8 March.

Around 3.25pm, a man entered a tobacconist on Brown Street and approached the counter with a brown duffle bag.

It will be alleged the man produced a knife and demanded money from a staff member.

The offender then fled the store on foot with a sum of cash.

The employee was not physically injured during the incident.

The man is described as a Caucasian with a medium build and at the time was wearing dark clothing and carrying a brown duffle bag.

Anyone who recognises the man, or who has information that could assist investigators, is urged to contact police.

Investigations are ongoing.

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