THREE men claiming to be police officers tricked their way into the home of a man in the Winyates area.
The trio called at the man's home at the end of June and told him they needed to search his house.
A small quantity of tobacco is believed to have been taken.
Days later, another three men claiming to be police called again at the same man's home but took nothing.
No identification was shown on either occasion and after inquiries, it was confirmed the men were not police officers.
Sgt Neil Billingham, of north east sector, said: "Thankfully, this type of incident doesn't happen often but it is concerning and we're treating it very seriously.
"We want people to be aware they have taken place, be vigilant themselves and remember to check the identification of anyone calling at their home.
"Police officers in plain clothes are more than happy to show their warrant cards and if people still feel unsure, a phone call to the police station will confirm that officers are genuine.
"We'd also encourage anyone with relatives or neighbours who are vulnerable to talk this through with them."
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