The Manchester attacker – who slaughtered 22 people at a concert by pop-star Ariana Grande a week ago on Monday – studied at Burnage Academy for Boys between 2009 and 2011.
Abedi was part of an Arabic-speaking “clique” during his time at the school, The Times reports. He is believed to have been part of a group of teens that became upset when one of their teachers brought up the topic of suicide attacks.
The teacher “asked what they thought of someone who would strap on a bomb and blow people up”, according to a source quoted by the paper.Pals of the evil killer revealed his wild youth of booze and drug-taking – and how he was nicknamed “Dumbo” because of his big ears.
Pictures show him grinning in a bar with three student friends and on a beach in Libya, before he is thought to have been indoctrinated.
Pals described the brainy Manchester United fan as “very jolly”.
But over the past two years he is said to have changed completely after a number of trips to Libya to visit his family.
This week it was claimed Abedi called his family in Tripoli 15 minutes before the attack.
His mother Samia Tabbal, 50, and father Ramadan, 51, a security officer, were born in the Libyan capital.
They emigrated to London before moving to Manchester.
Manchester-born Abedi is believed to have regularly travelled to see his family, who moved back to Tripoli following the fall of Colonel Muammar Gaddafi in 2011.
One friend said: “He became silent and withdrawn after a trip a couple of years ago. Before then he was a happy-go-lucky kid and always did well in school.
“We used to party together. He loved being around his friends and wasn’t a strict Muslim at all.
“He even used to drink alcohol and loved smoking weed, he never mentioned religion.
“He was very jolly and happy. But over the past 18 months he became withdrawn and stopped hanging around with the people he used to.
“Before that he was so boisterous, always the joker.”
They added: “But as he started visiting Tripoli he was exposed to a lot of things. It’s enough to turn the purest person dark.
“And that’s what happened to a lot of young men. they were told it’s their religious obligation to step up and fight.
“When he came back he cut off from all his old friends.
“He stopped partying and he became an introvert.”