POLICE are urging residents to be vigilant after a man was seen knocking on doors asking to buy gold.

North Wales Police issued a community alert this weekend to say a cold caller was in the area of Bron Haul in Trelawnyd on February 2.

A spokesperson said: "A male was seen in the area knocking on doors and asking to buy gold, targeting elderly residents.

"The description of the male is aged around 30 – 40 years old, 5ft9 tall with dark hair.

"If the male is seen in the area please contact 101."

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Police and Trading Standards issued a warning about so called 'Nottingham Knockers' operating in the Wrexham area last week. 

It involves people, who say they have recently been released from prison, attempting to sell items of rucksacks. 

Trading Standards said in some cases they have become aggressive, and urged people to be vigilant. 

A spokesperson said: "The men have been very inquisitive as to the where the biggest houses are and where is the richest area. Again, please understand that these sellers are professional criminals and the best way to stay safe is not engaging with them.

"If you’re visited by Nottingham knockers, please report to North Wales Police as soon as you can by calling 101 to give the police the best chance to attend your area and apprehend the individuals. Please try and record any details, including vehicle registration."