The two men entered the BP service station in Rolleston about 2.20am on Monday.

A man wearing a shark onesie and armed with a hammer has robbed a Canterbury petrol station of lollies.

Detective Senior Sergeant Mark Worner said two men entered the BP Rolleston about 2.20am on Monday.

"They have smashed a glass shelf, which startled the attendant, who retreated to the staff room, where another colleague was having their break.

POLICE Police said the men got away with an unknown amount of lollies.

"The two offenders have then left the service station with an unknown amount of confectionery."

Police searched the area after the incident, but failed to locate the men.

Both offenders were of average height and build. One was wearing a blue and white shark onesie, a grey cap, black gloves, socks and had a dark blue bandana covering his face. He had been carrying the hammer.

POLICE One of the two men was wearing a shark onesie.

The other was wearing a black hooded sweatshirt, black rugby shorts, a black baseball cap, sunglasses and a blue bandana around his face.

A BP spokeswoman said her team did a "fantastic job" and followed the correct process.

"We are extremely pleased that no one was harmed. We are, of course, working closely with our staff to provide them with support as a result of the incident."

Worner said the staff had been offered the services of Victim Support.

Police would like to hear from anyone who may be able to identify these men or may have seen people wearing these clothes in the area.

Anyone with information was asked to call police on (03) 363 7400 or anonymously via Crimestoppers on 0800 555 111.