Police in Scarborough are warning members of the public to be vigilant when using cash machines.
The warning comes after a camera and card skimming device were recovered from a cash machine at the Post Office on Aberdeen Walk in the town.
The machine was powered down following the discovery and was due to remain out of action until at least Tuesday 28 August.
The device was discovered by a member of the public who tried to use the machine late on the evening of Sunday 26 August. It is unknown how long it had been in place.
Officers are appealing for anyone who has seen anyone suspicious loitering in the area of machine to contact them.
Anyone who believes they may be a victim of the skimming device should contact their bank.
In the meantime, officers have repeated their advice to customers when using cash machines.
PC John Coleman who is investigating the incident, said: "The most important thing is to cover your hand while you are typing in your pin number, without your pin, thieves have limited opportunity to use the card.
"Thieves use very sophisticated technology and the devices are often very difficult to spot. The devices will often be made to fit in with the colour and design of the machine they are attached to.
"They consist of a card reader which is placed over the card slot which records your card's details and a tiny pin-hole camera which records your pin number as you type it in. In some cases, a cover is placed over the keypad which can also record your pin number.
"The camera is usually stored in a strip of metal or plastic which looks like trim and is often coloured to match the machine. The camera lens is almost invisible.
"Please report any suspicions you have about a machine to the police and the premises in which the machine is based if they are open. Don't, under any circumstances, try to remove the device yourself as the offenders may still be in the area."
Anyone with any information which could help the investigation is asked to ring North Yorkshire Police on 101. Or you can pass information to Crimestoppers anonymously on 0800 555 111.
To report a suspicious device, call 101 immediately.
10.15am - 29 August 2012