A police spokesman said: “There have also been instances where prospective buyers are relieved of cash without receiving the item advertised.
“The BPS advises against cash transactions and instead, have payment transferred into a bank account.
“If this is not possible and there must be a face to face exchange of cash, please arrange to carry out such transactions during the daylight hours, in high traffic areas.
“This will minimise the risk of you being robbed of your cash, or item you’re selling,” he said.
“Also, make sure that you are shown proper proof of ownership of the item being sold, so as to avoid falling victim to purchasing stolen goods.”