Hashem Abedi, the younger brother of Manchester bomber Salman Abedi, will be tried in Libya over his suspected role in the attack, the BBC has been told.
The 20-year-old was arrested in Libya shortly after the suicide attack in May that killed 22 people.
Libya’s chief investigator in the case, Asadiq al-Sour, said Mr Abedi is suspected of having helped his brother and collected materials for the attack.
Their father Ramadan, who was also detained in Libya, has been freed.
Hashem Abedi will be taken to court within two months at most, Mr Sour told BBC Middle East correspondent Orla Guerin.
British police have already questioned Mr Abedi in Tripoli several times, he added.
The authorities said they had no concrete evidence against his father, who has returned to the family home on the outskirts of Tripoli.
BBC