An incident took place in the Camperdown Woolworths car park about 5pm on Sunday, July 24

A 31-year-old Ballarat man was arrested in Cobden on Friday morning and is assisting police with their enquiries into an alleged armed robbery.

Detective Sergeant Matthew Laxton, of the Warrnambool police crime investigation unit, said the man was arrested in the Cobden area at 8.45am on Friday.

The man was wanted in relation to an alleged armed robbery in the Camperdown Woolworths supermarket car park at 5pm Sunday, July 24.

"The Ballarat man is in custody after being arrested by Warrnambool investigators and currently assisting police with our enquiries," he said.

"It's expected the man will be charged with offences and front a magistrate for a remand hearing either Friday afternoon or on Monday," he said.

Anyone with information about the incident is requested to contact Warrnambool police or Crime Stoppers on 1800 333 000.

On July 26: Police are in the process of tracking down a 31-year-old Ballarat man after an alleged armed robbery in Camperdown on Sunday.

Detective Senior Constable Joe Fisher, of the Warrnambool police crime investigation unit, said an incident was alleged to have happened in the Camperdown Woolworths supermarket car park at 5pm Sunday

"Parties known to each other have been involved in a dispute over money - one man and one woman," he said.

"The victim, a 31-year-old Ballarat woman, alleges that the male threatened her with a knife over a small debt and she handed over $50.

"The small debt related to a vehicle and was not much more than the $50 handed over."

Detective Senior Constable Fisher said police wanted to catch up with the Ballarat man so he could explain his version of what happened.

"The whereabouts of the man are unknown at this stage but we will be coordinating with the Ballarat CIU about the alleged armed robbery," he said.

"Both the male and female involved are understood to be from Ballarat.

"We are requesting that anyone who saw the incident unfold in the Woolworths car park about 5pm on Sunday contact the Warrnambool police CIU (5560 1153) or Crime Stoppers on 1800 333 000," he said.

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