Thor-themed decanter stolen from Vic bar

Five men are on the run after stealing a large, heavy Thor-themed whisky decanter from a Melbourne bar.

Images of the group have been released after they took the custom-made decanter, in the shape of Thor's mystical hammer from the popular superhero franchise, after drinking at the Melbourne East bar on Saturday night.

The men, aged in their 30s and described as Caucasian, told staff "we came back from the hammer" before disappearing, police said.

The decanter weighs 8kg and is 60cm long with a leather-bound shaft and engravings on its head.