Northamptonshire Police have confirmed that officers from Leicestershire Police have been assisting with house-to-house enquiries in the Duston area of Northampton.
The officers are working on an investigation being run by the major crime team at the East Midlands Special Operations Unit.
Householders are reminded to always ask for photographic ID from unexpected callers.
If you are unsure about a caller’s identity, don’t feel you are being rude by turning them away, genuine callers won’t mind.
Police officers carry photographic ID and warrant cards which they should show when they introduce themselves.