Manchester Arena bomber's brother knew of atrocity and was planning his own massacre

22-year-old Manchester Arena bomber, Salman Abedi (inset) detonated a bomb that killed 22 people and injured 119 during a Ariana Grande's concert on Monday night with children in attendance.
His brothers and father have been arrested as part of the investigation of the bombing.
His father, Ramadan Abedi said:
"We don't believe in killing innocents. This is not us."
He claims he had spoken to his Salman a few days ago and that he appeared and sounded "normal" and was preparing to visit Saudi Arabia.

Abedi's younger brother Hashem has also been arrested in Tripoli, Libya, on suspicion of having links to the ISIS who claimed responsibility for Monday night's atrocity.
He was 'aware of all the details' of his plans, a Libyan security force said. Hashem had been 'under surveillance for a month and a half' and 'investigation teams supplied intelligence that he was planning a terrorist attack in the capital Tripoli', the Deterrence Force said on its Facebook page.

Salman's older brother Ismail, 23, was arrested yesterday in Chorlton, south Manchester. He is still being quizzed by police, who are probing the family's links to terror networks.