Launceston CIB is investigating an armed robbery at the ANZ Bank, Mowbray, this afternoon.

Police were called to the bank, in Invermay Road, about 1.55pm today.

Police allege a man entered the bank armed with a knife and demanded cash from a teller and a customer.

The offender left the premises with a quantity of cash. No one was physically injured during the incident.

The offender left the scene on foot and was last seen in the area of the Mowbray Marketplace shopping centre.

Detectives are following a particular line of inquiry and investigations are continuing.

Anyone with information should contact Launceston CIB on 131444 or

anonymously by calling Crime Stoppers on 1800 333 000 or online at crimestopperstas.com.au.