A 23-year-old man suspected of throwing a fire extinguisher at police from the roof of Millbank Tower during the student protest in London has been arrested. Skip related content
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The man, who is understood to be a student from Reading, was arrested by officers in Cambridgeshire on behalf of the Metropolitan Police.
He is being held on suspicion of violent disorder at Parkside police station in Cambridge, Scotland Yard said.
A spokesman said: "This arrest follows an investigation into public disorder where a fire extinguisher was thrown from the roof of Millbank Tower."
After the empty fire extinguisher was flung from the top of the building housing the Tory party headquarters, it narrowly missed two riot squad officers.
Sky News crime correspondent Martin Brunt said: "Because the fire extinguisher landed so close to the officers, representatives of the Police Federation have called for the thrower to be charged with attempted murder."
He added: "Footage appears to show a man lifting the fire extinguisher and swinging it around before he hurls it off the roof.
"When the camera goes back to him, he appears to have disappeared, perhaps because he's realised the gravity of what he has done."
The incident was one of the defining moments of the students' four-hour stand-off on Wednesday.
It involved a breakaway group of up to 50 protesters who smashed windows, discharged fire extinguishers and threw debris from the top of the Millbank office complex.
Meanwhile, the Met Police has revealed 10 of the 54 people arrested during outbreaks of disorder were school pupils aged under 18 and the remainder were all students, including 21 women.
Teams of officers from the Met's public order intelligence unit have been scouring footage of the Tory party HQ storming.
Activist websites have published instructions to those who fear they may be identified and arrested in the aftermath of the violence.
One website told participants to destroy potential evidence, including clothing and any distinctive jewellery worn.
A contributor urged demonstrators not to panic or give themselves up as a result of the flood of media coverage.