(Metro) -- The unnamed worker said they knew the bomber Salman Abedi when he was at college, and had expressed their concern to officers after he said he thought ‘being a suicide bomber was OK’.
He also apparently made comments ‘supporting terrorism’, which were also reported.
The calls were made five years ago after Abedi left school, they told the BBC.
Salman Abedi detonated a nail bomb near the entrance of Manchester Arena on Monday night, as up to 21,000 fans were leaving a sold-out Ariana Grande concert.
At least 22 people have died, and another 119 are injured – 20 of them critically.
It was the deadliest terrorist attack to hit the UK since the 7/7 bombings in London in 2005.
Salman Abedi’s brother Ismail was arrested by UK counter-terror police on Tuesday after a series of raids.
The bomber’s other brother, Hashem, and his dad Ramadan were both also arrested in Tripoli by Libyan counter-terror officers.
Ramadan Abedi, the bomber’s father, who was arrested by counter-terror police in Libya (Picture: UNP)
Libyan officers have said Hashem ‘knew all the details’ of his brother’s devastating attack.
They added that he was planning his own ‘terrorist activity’ in Tripoli.