SECURITY guards and police rushed through Christmas crowds to reports of an assault in McDonald’s.

A 26-year-old man was arrested on suspicion of assault as crowds attending the town centre Christmas lights switch-on event on Saturday night tried to head home. 

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But he was swiftly de-arrested when it became clear there had been a misunderstanding and there had been no assault.

A Wiltshire Police spokeswoman said there had been no other arrests at Saturday night's lights event.