A machete has been recovered after a suspected knife fight broke out at a shopping centre on Boxing Day.
Officers were called to reports of an altercation at the Intu Bromley Shopping Centre at 15:45 GMT.
Video filmed by a member of the public, Alexander Adeosun, appears to show shoppers fleeing in panic, while a photo shows a police officer holding what appears to be a large knife.
A man in his 20s, who suffered a minor head injury, was arrested.
He was detained on suspicion of affray and possession of an offensive weapon.
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