The Islamic State has claimed responsibility for the explosion at a Manchester Ariana Grande concert that killed at least 22 and injured dozens of others, The Associated Press and SITE Intelligence Group report. A statement from the terrorist group claims the attack was "in response to their transgressions against the lands of the Muslims."
Chief Constable Ian Hopkins of the Greater Manchester Police said that the deadly explosion was likely caused by one man who used an "improvised explosive device" and died in the blast. Local police have additionally confirmed the arrest of a 23-year-old man in south Manchester in connection with the attack.
A former intelligence officer told BuzzFeed News that it is "highly unlikely" such an attack could be carried out by a single terrorist. "Explosives are sophisticated and prone to failing, so whoever prepared the device knew what they were doing," the former intelligence officer said.