In both cases, victims have sold items to a Facebook user, however no money had been received.

One victim sold her laptop for £280 and arranged for the payment to be made via PayPal. She has then received an email from a fraudster claiming to be from ‘NatWest Bank’ saying they had received the money but she needed to provide a copy of the delivery receipt in order for them to release them.

After posting the parcel, the victim received another message from the address requesting £400. It was at this point that she realised she’d been scammed.

The circumstances of the second incident were very similar, however this time a phone had been sold.

This image was captured at Firth Park Post Office in Sheffield, and police are keen to speak to the man in connection with the inquiry. He is black, and believed to be in his late-teens or early twenties.

Anybody with information should call 101 quoting reference 14/71110/22.