A child of 12 was among 20 people arrested following a disturbance in a street, police said.
Officers were called to the scene on Gateside Road in Wishaw, North Lanarkshire, following reports of a "large scale disturbance" at around 9.15pm on Monday.
Those arrested were aged between 12 and 45, police said.
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Police said inquiries into the incident are under way.
They appealed for anyone with information to contact them.