(BBC) The decision not to question the Manchester Arena bomber after he returned to the UK from Libya four days before the attack was a mistake, a senior MI5 officer has conceded.
The officer, referred to as Witness J, told the Manchester Arena inquiry Salman Abedi was assessed in the months before the 22 May 2017 bombing.
He said “no intelligence” indicating a threat to national security was found.
But he conceded it was an error not to ask police to question Abedi on 18 May.
The inquiry has begun looking at what was known about the 22-year-old before the attack, which saw 22 people die and hundreds more suffer injuries in a bombing at the venue on 22 May 2017.
