Updates continue to roll in on the story, but here's what we know so far.
The concert had just ended when an improvised explosive device went off in the venue’s entry hall a little after 10:30 p.m. GMT.
People at the concert reported hearing "a huge bomb-like bang" that caused panic among attendees as they made their way to the exits.
Police have confirmed 22 people were killed in the explosion and 116 injured.Getty Images
Among those hospitalized for injuries related to the blast are at least 12 children under the age of 16. More concert attendees remain missing.
Ariana Grande issued a statement on Twitter.
The heartbroken star, who was not injured at the concert, reached out to her fans after safely evacuating the arena.
All 22 victims have been identified.
The victims include girls as young as 8 and parents who were waiting to pick up their children from the concert.
Eight people have been arrested in connection with the attack, while the suicide bomber died in the attack.
Greater Manchester Police have arrested a total of eight people in connection with the attack and have been conducting searches at multiple residences. An additional woman was arrested and released without charge. Police say the bomber, who has been identified as Salman Ramadan Abedi, 22, was killed in the blast. Chief Constable Ian Hopkins said it was “very clear that this is a network that we are investigating.”
ISIS has claimed responsibility.
ISIS issued a statement claiming one of its members carried out the attack.
Ariana Grande has suspended some upcoming tour dates.
Ariana has suspended six of her immediate European tour dates, including two in London, but according to a statement from her management she will resume the Dangerous Woman tour on June 5 with a concert in Zürich.