Six Libyans are wanted for questioning by the British Police investigating the Manchester Arena bombing, according to the BBC.
The parents of the Libyan brothers responsible for the attack are both suspects, as are two associates.
One of the associates, who was arrested following the attack, was able to flee the UK, despite remaining a suspect and being charged with other offences. Two further men are of interest to the police but have not yet been questioned.
Salman Abedi detonated a bomb at the end of an Ariana Grande concert on 22 May 2017, killing 22 people and injuring hundreds. His younger brother Hashem, who was central to the attack, was jailed this year after being convicted of murder.
Ramadan Abedi, father of the attackers, is wanted for questioning. This is after his fingerprints were found inside a car used by the brothers, to store explosives and bomb-making material.
The vehicle was owned by the brothers for two days, before travelling to Libya with their father in April 2017.
While in Libya, the car was parked outside the property of an associate, named Elyas Elmehdi, who is one of the four outstanding suspects.
On arrival back in the UK in May 2017, days before the attack, Salman returned to the vehicle to collect material from it. Police also wishes to speak to Samia Tabbal, the mother of Salman and Hashem, who is also currently in Libya.
Mohammed Soliman is another suspect. He purchased a bomb-making chemical for the brothers, but left Manchester for Libya in April 2017. The two other people that police want to trace are Majdi Alamari, who lives in Libya, and Anas Abuhdaima, whose location is unknown but is believed to be somewhere in the UK.