Tickets for a concert to benefit victims of the Manchester bombing sold out in less than 20 minutes Thursday morning.

Some of the biggest names in music were scheduled to perform in Ariana Grande's One Love Manchester concert on Sunday. The lineup includes musicians like Katy Perry, Pharrell Williams, Coldplay, Miley Cyrus, Usher, Justin Bieber, Take That, and One Direction star Niall Horan, with all proceeds set to go to the Red Cross' Manchester Emergency Fund.

#OneLoveManchester We're working hard to get tickets direct to fans. We are cancelling tickets of those who are reselling wherever possible — Ticketmaster UK (@TicketmasterUK) June 1, 2017

Some tickets were reserved for fans who attended last Monday's Ariana Grande show.

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Meanwhile Thursday, Manchester Police said they had 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 remained in custody, and were being questioned about possible roles in the blast while six people, including a woman, had 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.