Hashim, left, and Salman, right, allegedly have links to ISIS
Hashim Abedi, 20, was believed to be part of a terror cell in Tripoli thought to be in the late stages of building an explosive device.
Authorities believe Abedi’s group was targeting the Head of the United Nations Support Mission in Libya, Martin Kobler.
Hashim Abedi was arrested by Libyan special forces on Tuesday
Hashim was arrested on Tuesday night at his family home in the Libyan capital on suspicion of links to terror group Islamic State, with his father Ramadan also being held.
Now top MI6 officers are believed to be cooperating with Libyan special forces to extract information about Salman’s UK terror network.
Rada, Libya’s top intelligence police unit, alleges the Abedi brothers had joined ISIS and Hashim had in-depth knowledge of his brother’s sick plot to kill children at the Manchester Arena.
A Rada spokesman told the Telegraph: "When we arrested and we asked him,” he told us, 'I have ideology with my brother'.
Manchester bombing: Investigation so far Wed, May 24, 2017
The investigation so far into the Manchester bomb attack that killed at least 22 people, with more than 60 injured after Salman Abedi detonated a bomb in the Manchester Arena, at 10:30pm Monday, 22 May 2017
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Handout photo courtesy of Alex Finnie, of men wearing body armour during a raid of a block of flats in Blackley, north Manchester, following the attack on Manchester Arena
“Hashim told us, 'I know everything about my brother, what he was doing there in Manchester’.”
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Salman was believed to be in contact with his brother just days before he committed the atrocity on Monday that killed 22 people and injured more than 160.
Authorities believe Salman transferred £2,500 to Hashim – money which may have come from Salman’s student loan.
Police insiders have warned that home-grown jihadis may be enrolling in University courses to receiving funding with “no intention” of showing up.
Investigations continue following Monday's attack
Former Metropolitan police detective David Videcette said: “It is an easy way for a terrorist to move forward and finance their activities at the expense of the taxpayer.
“All you have got to do is get yourself into university and then off you go.”