A woman has become the sixth person arrested in the UK over the Manchester Arena bombing, as police said they were investigating a "network".
Police said they had arrested the woman after an armed raid at a block of flats in Blackley, north Manchester.
Suicide bomber Salman Abedi killed 22 - including children - and injured 64 at an Ariana Grande concert on Monday.
In Libya, the bomber's father, Ramadan, and younger brother, Hashem, have been arrested, Reuters is reporting.
More:
http://www.bbc.co.uk/news/uk-40032504