LONDON (AP) — Manchester Police say they have released a man who had been arrested in the concert arena bombing investigation without charging him.
Police said the 21-year-old man was set free Wednesday night.
Ten men are in custody being questioned about possible roles in the blast while six people, including a woman, have been released without being charged.
The suspects still in custody have not been identified or charged.
Police say that the 22-year-old bomber, Salman Abedi, acted largely alone when he assembled the device he used to kill 22 people and injure dozens more at an Ariana Grande concert on May 22.
Abedi died in the blast.