Police were called to the centre of Cromer after reports of six men 'punching each other.'
The incident happened on Bond Street at 9.37pm on Sunday night.
Norfolk Police received a call from a woman saying she could see a "man covered in blood" and "there was six of them."
The six men were believed to be punching each other, police have said.
One was arrested for disorderly behaviour after he punched through a window.
The window at the Royal Mail enquiry office, on the corner of Bond Street and Church Street, was later boarded-up.
Other than that, there was no sign in the town on Monday, June 17, that there had been any disturbance there.
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