A business has been targeted by suspected rogue traders in a series of incidents involving threats of violence and blackmail.

Police were called on August 17 regarding an incident in south Norfolk in which a call was received from an unknown number, asking if the victim wanted a road maintenance service.

A group of men arrived at the business and commenced work briefly before leaving.

READ MORE: Woman targeted during roof repairs cold call in Lowestoft

A further call was then received demanding a large sum of money for the work, threatening the victim if they did not pay.

Officers believe this is the latest incident in a series of reports from businesses across south Norfolk, all with similar circumstances.

Victims have been contacted by a group of people anonymously offering a service of gravelling or tarmacking on the premises.

READ MORE: Three women charged after lambs were stolen from Sandringham Estate

Once the work is complete, the group claims the victim owes thousands more than the either free or reduced price previously agreed upon.

It results in phone calls being made to the victims with threats of violence, blackmail, and criminal damage towards their businesses.

Anyone who may have been a victim of rogue trading or a scam should report it to Action Fraud.