Tasmania Police is investigating an armed robbery that took place in the carpark of a Prospect hotel on Thursday night.
Police were called to the scene about 10.30pm after a man allegedly approached a vehicle in the car park and threatened the two occupants with a knife.
The man then fled on foot after getting a wallet from one of the occupants.
No one was physically injured during the incident.
A woman has been arrested and police are following a specific line of enquiry in relation to other people who may be involved.
Anyone with information about the incident is urged to contact Launceston CIB on 131 444.
Information can also be provided anonymously to Crime Stoppers on 1800 333 000 or at crimestopperstas.com.au.