There was panic in a West Kensington street after people reported seeing a "man on a rampage with a gun" on Monday night (February 5).
A man, believed to be carrying a firearm, was allegedly "assaulting people in the street", police said.
Armed officers swooped on the scene, in North End Road, and arrested a 25-year-old man on suspicion of causing actual bodily harm and criminal damage.
An eyewitness told getwestlondon the incident happened outside The Crêpe Factory and inside Paddy Power.
A Met spokesman said: "Police were called at 9.42pm on Monday (February 5) to North End Road, to reports of a man, believed to be in the possession of a firearm, allegedly assaulting people in the street.
"Officers, including armed officers, attended along with the London Ambulance Service and subsequently arrested a 25-year-old man suspected of causing actual bodily harm and criminal damage."
A woman was taken to a central London hospital from the scene where she was treated for shock.
No firearm was recovered at the scene and enquiries are ongoing.
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