Vic store robbed four times in four nights

A bedding burglar has hit a Melbourne store four times over four consecutive nights.

The Berwick manchester store was robbed on June 6, 7, 8 and 9, with thieves taking around $5,000 in stock.

Narre Warren Detective Sergeant Geoff Rumble said police couldn't believe the same store was robbed four times.

"After it happened three times the locks and security was changed. But the last night they forced a roller door and did a lot of damage, so they were very determined," Sgt Rumble told AAP on Tuesday.