Police swooped on Paddington station to arrest a man on Monday.
The man was reportedly pinned to the ground by officers outside the bustling central London station.
He was arrested on suspicion of public disorder and carrying a weapon.
The incident took place shortly after 12.30pm, eyewitnesses said.
In footage which has emerged on social media, a man can be seen being apprehended by officers.
The video shows an unidentified police officer saying: “He was trying to hit us with it.
A spokesman for British Transport Police said: “Officers were called to Paddington rail station following reports of a man acting suspiciously.
“The call came into police at 12.33pm today.
“Officers attended the scene and one man has been arrested on suspicion of public order and for possession an offensive weapon.
“The man has been taken to a place of safety.
“The incident is not being treated as terror related.”
It comes merely hours after a van driver ploughed into pedestrians outside a mosque in Finsbury Park.
One man died after pedestrians were targeted by a man driving a van near Finsbury Park Mosque in north London early on Monday.
Witnesses described hearing the man, who was detained by members of the public at the scene, shout: “I’m going to kill Muslims.”
The suspect, described as a large white man, was arrested by police on suspicion of attempted murder.
Source : BirminghamMail