According to The Telegraph newspaper, the Libyan security services, which were monitoring the cell for months, claimed that Abedi's younger brother was one of the key members of the group.
On Monday night, an explosion occurred outside the Manchester Arena at the end of a pop concert, leaving at least 22 people dead and dozens more injured. Daesh claimed responsibility for the attack.
The UK police have identified 22-year-old Salman Abedi as the individual they suspect of having perpetrated the attack and currently are carrying out investigation into a suspected Islamist network behind the incident.
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