Police have seized a foot-long hunting knife from a group of thugs after receiving a tip-off from the public.
Video captures a policewoman taking the Rambo-style knife to a police van while other officers hold the five men onto the ground with their hands cuffed behind their backs.
Officers searched the suspects and escorted one man away towards a wall to question him.
The group were then taken to the back of the police van and brought to the police station.
The shocking incident took place near Portland Street near Britannia Hotel in Manchester city centre on Wednesday afternoon, reports the Manchester Evening News.
A witness said he heard officer shouting at the group to "get on the ground".
He added: "I was on my lunch break.
"All of a sudden, i heard loads of sirens and wondered what was happening.
"The next thing I hear 'get down to the ground' and there's two police vehicles and six officers and I see five young men all down on the ground.
"I started filming and out of the pocket of one of the men, police pulled out a foot-long Rambo knife.
"I've never seen anything like it."
A spokesman for Greater Manchester Police said: "Police were called shortly after 1.50pm today [January 8] to reports that a man was in possession of a bladed article on Portland Street.
"A group of five men were detained to be searched by officers and a 19-year-old man was arrested on suspicion of possession of an offensive weapon in a public place.
"It is not believed anyone was approached with the weapon and no injuries have been reported."
