Officers are on the hunt for a person who performed a sex act in front of an angler.
At Weedy Lake, High Street, Little Paxton, a person committed the public order offence next to, and in front of, a member of public who was fishing between 1.15am and 1.30am on Thursday, March 12.
INFORMATION: If you have any information about the incident, call Cambridgeshire police on 101.
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