Barnet Jews have been warned to be on their guard when using ATM machines in Hendon and Golders Green after a spate of card fraud incidents over the weekend.
Fraudsters fitted devices to a number of cash machines to trap cards and record PIN numbers which were then used to withdraw large amounts of cash.
Police have contacted synagogue groups as part of an awareness drive to urge residents to exercise particular care and, where possible, to use familiar cash machines so that any attached devices are more visibly obvious.