(BBC NEWS) -- 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.
The bomber's father, Ramadan, and younger brother, Hashem, have been detained by militia in Libya. And his older brother, Ismail, was detained in Chorlton, south Manchester, on Tuesday.