Police are investigating an armed robbery which occurred in Crestmead yesterday evening.

At about 10.15pm, three men entered the Bumstead Road service station where one man remained at the front door.

The second man walked to a rear counter and threatened the console worker with a knife while demanding he walk to the cash register with him.

The third man, also armed with a knife, was attempting to open the cash register at the time and demanded the console operator open the till while he removed some cash. The second man demanded goods from the store.

All three men then ran out of the business.

The 24-year-old male attendant was not physically injured during the robbery.

Investigations into the incident are continuing.