Police in Ashington are warning people to be on their guard when using cash points.
It follows an incident when a woman approached an 80-year-old man while he was using a terminal at Asda on Thursday, April 3.
The woman told the elderly man he had dropped some cash and handed it to him, but as she did so she distracted him and stole his bank card.
She then withdrew cash from the ATM with the card.
The woman was with a man at the time of the theft.
The pair are described as being of Eastern European or Asian appearance.
The woman was said to be in her 20s, about 5ft 2ins tall of slim build, with black hair.
She was wearing dark clothing and spoke with a foreign accent.
The man is believed to be in his late 20s, about 5ft 6ins to 5ft 8ins tall, of slim build, and had black hair.
A similar offence took place in Ponteland at a cash point at Barclays Bank in Main Street at around 11am on Thursday and police are looking to see if the two offences are linked.
Ashington Neighbourhood Inspector Dave Harris said: “People should be vigilant when using cash points, and this is advice not only for people in this area, but also across Northumberland and the force.
“Cover the keypad when inputting your pin number and be aware of who is around.
“If anyone approaches you be wary and ensure you keep your bank card in your hand at all times.”
Anyone with information is asked to call police on 101 ext 69191, or Crimestoppers on 0800 555111.