Police are studying CCTV footage after a shopper at Tesco, Greenfield had her purse stolen on Wednesday, July 26.
The victim contacted the Independent to warn other shoppers to be on their guard.
The offender(s) are described as “very organised and clever.”
She said one well dressed man distracted her by asking advice. “He had an accomplice who went into my bag,” she added.
An officer from GMP Saddleworth and Lees said: “Enquiries are ongoing regarding CCTV at the store with a view to identifying the offender(s).”