Police have released an image of a man they want to speak to in connection with theft and rogue trading offences.
An elderly and vulnerable woman was targeted in Duxford on February 9 when a man told her she owed him £1200 for work he had not carried out.
The victim allowed the man into her home while collecting the money and her purse was taken from a cabinet.
Several days later he returned and took £1500, again for work he had not done.
Anyone who recognises the man or has any information should contact DC Alice Draper on 101 or Crimestoppers, anonymously, on 0800 555111.
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