Police were called to two fights in Jersey last night, one involving reports of a knife.
Firearms officers were deployed to Le Geyt at around 9pm.
The force says someone reported seeing a knife. A weapon was not used, but one was located.
A 16 year boy was arrested for possessing an offensive weapon.
Earlier, at 7.45pm, police attended the Havre des Pas Lido where they arrested two teenage boys for breach of the peace.
All have been released on police bail while enquiries continue.