A failed robber's on the run after trying to hold up a pizza shop at Mornington on Hobart's eastern shore on Wednesday night.
Police say a male masked with a blue bandana entered Pompeo's Pizza on Binalong Road at around 7.30, brandishing a thin-bladed knife.
Staff refused his demands for money, instead confronting him, before he fled empty-handed.
The would-be robber is described as late 30s or early 40s, around 185 cm tall and of slim build; he was wearing a grey hooded top.
"Investigations are continuing in relation to this incident and any members of the public who may have dash cam or CCTV covering the nearby area, or noticed suspicious behaviour in the nearby area, are asked to contact Bellerive CIB on 131444 or contact Crime Stoppers on 1800 333 000," said a police statement.