Police are currently searching for three men following an aggravated armed robbery at the United Service Station at Lutana about 5.15am.

It is alleged three men, aged in their late teens to early 20s, entered the service station wearing balaclavas.

One man allegedly threatened staff while in possession of a knife. One of the other men was allegedly in possession of a hammer.

The offenders stole a quantity of cash and left the area on foot. They were last seen heading north on Derwent Park Road towards Prince of Wales Bay.

The staff were not physically injured during the incident.

Police would like to speak to anyone who has information in relation to the incident, dash cam of the area around the time, or suspicious activity in the area around the time.

Information can be provided to Glenorchy CIB on 131 444 or Crime Stoppers Tasmania at crimestopperstas.com.au or on 1800 333 000 – quote reference OR754202.