ISIS Claims Responsibility for Manchester Concert Attack; Toll Rises to 22

The Islamic State claimed responsibility on Tuesday for the bombing at Manchester Arena, the deadliest terrorist assault in Britain since 2005, as the death toll rose to 22.

The bomb tore through an entrance hall of the 21,000-seat Manchester Arena at about 10:30 p.m. on Monday as a concert by the American pop star Ariana Grande was ending and as crowds of teenagers had begun to leave, many for an adjacent train station.

Pandemonium ensued, as panicked adolescents struggled to connect with parents and guardians waiting outside to pick them up. As well as those killed, dozens of other people were wounded in the attack; 59 were hospitalized, some with life-threatening injuries.

The police said that they were canvassing leads and poring over surveillance footage to determine if the assailant — who died in the assault — had acted with any accomplices. Shortly before noon on Tuesday, the police announced that they had arrested a 23-year-old man southwest of the city center “with regards to last night’s incident,” but they did not provide additional details.

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