Tauranga police has receased CCTV footage of the man who entered a convenience store at Cameron Road, near 11th Avenue on Monday morning, March 4.
The balaclava-clad man entered through the back door of the Crazy Clearance and Convenience Store on Cameron Rd as staff were opening the shop about 7.20am.
The store manager, who refused to be named, said the man ran in the back door holding two pieces of wood about 5cm thick and 1.5m long under his arms.
Police say he used it as a weapon to strike a store worker.
The man demanded cash and cigarettes but left the store empty-handed.
He ran north onto Cameron Road, and then possibly east along 11th Avenue.
Police would like to speak to anyone who recognises the man, or who may have seen him in and around the area of Cameron Road and 11th Avenue.
It is likely that he would have been hanging around the area for a period of time prior to the incident taking place.
The male shop worker was briefly hospitalised with bruising.
Police also appeal to any store owners or workers around Tauranga who have seen a man matching this description to contact Detective Sergeant Iain Chapman at the Tauranga Police on 07 577 4374 or Crimestoppers on 0800 555 111.