Video footage shows Boxing Day shoppers fleeing in panic through a London mall, after a man wielding a machete sparked fears of an ISIS-style terrorist attack.
Armed police were called to the shopping centre in Bromley, after reports of an altercation.
Mobile phone footage shows families running for their lives through the mall, and shows some leaping over the side of an escalator to escape.
A man in his 20s, who suffered a head injury, has been detained on suspicion of affray and possession of a weapon.
Police are seeking approximately six teenagers, who were seen running from the scene.
Take your Radio, Podcasts and Music with you