Police surround a house in Clayton South. Credit:Channel Nine News

Police stormed a house in Melbourne's south-east after a five-hour long siege only to find it empty.

Officers were called to the house in Clayton South on Thursday afternoon after reports a gun was fired, reportedly narrowly missing a tradesman working nearby.

A Victoria Police spokeswoman said they received calls at 3.30pm that a gunshot had been fired near Westall Road.

They then surrounded the home and blocked off a section of the road, between Heatherton and Heyden roads. The Critical Incident Response Team was also called to the location.