A stash of drugs and a knife were found in Ramsey, with the help of PD (Police Dog) Bonnie.
Officers had been carrying out a warrant on Old Station Road on Monday (May 23), after they had received information about drug dealing in the area.
PD Bonnie successfully sniffed out a stash of drugs at the location, and a knife was recovered from underneath a pillow.
The knife was complete with cover, a serrated edge at the back of the blade and a metallic piece at the end of the hilt.
A lighter was also found.
A 17-year-old has been arrested on suspicion of being concerned in the supply of class B drugs and possession of a bladed article within a dwelling.
He has since been released under investigation, whilst Cambridgeshire Police continue their enquiries.
Locals can concerns related to drug dealing to Cambridgeshire Police online or by calling the police's non-emergency number 101.
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