Six people are wanted for questioning by detectives investigating the Manchester Arena bombing, a legal document has revealed.
The parents of the brothers responsible for the atrocity 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 police but have not been spoken to.
Salman Abedi detonated the bomb at the end of an Ariana Grande concert on 22 May 2017, killing 22 people and injuring many more.
Source: BBC News