Armed police swooped on a park in Dereham following reports a group of people had been seen in possession of a weapon.
Officers were initially called to Yaxham Road at 8pm on Monday, June 20, and were later seen at Dereham Recreation Ground.
Specialist firearms officers were deployed and the group was found but following a search, no weapons were discovered.
One of the men was dealt with for possession of the Class B drug cannabis and received a conditional caution.
An eyewitness reported seeing eight police cars as well as the armed officers near the Lynn Hill service station and more opposite Dereham Leisure Centre in Station Road.
They also reported seeing officers enter Dereham Recreation Ground.
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