The professionally produced letters state an unauthorised transaction has been detected on their account and that a fraud investigation is underway involving the National Crime Agency. Cllr Adrian Stohr, Mayor of Sudbury, has called for more awareness to protect locals from these deceitful letters. The Mayor of Sudbury called the scams 'horrendous' (Image: Adrian Stohr)"And there's so, so much going on in the world today, where I think people are under stress. The letters may also state that bank cards have been blocked and that further contact will be made regarding the investigation. "They will never ask you to keep a fraud investigation secret from family, friends or bank staff."