LONDON -- CBS News confirmed Tuesday that the man who blew himself up the previous night at an Ariana Grande concert in Manchester, England, was 23-year-old Salman Abedi, who was known to British authorities prior to the attack.
In a generic statement posted online, the Islamic State of Iraq and Syria (ISIS) claimed responsibility for Abedi's suicide bomb attack, which left 22 people dead, including children, at one of the entrances to the Manchester Arena.
Officials said one man was arrested Tuesday in southern Manchester in connection with the attack, and urged people to avoid the center of the city as operations continued. Police and British Prime Minister Theresa May made it clear the focus of the investigation was to determine whether the bomber "was acting alone, or was part of a wider group."
ISIS issued its claim of responsibility in a brief, generic statement that did not identify the bomber and appeared to get some of the facts of the attack wrong. It claimed a "caliphate soldier managed to place a number of devices among a gathering of crusaders in Manchester, and detonated them."
Officials say there was only one explosion, and there have been no indications that other devices were discovered at or near the arena.
U.S. intelligence sources told CBS News they were exercising caution on the early claim of responsibility from ISIS. Authorities are still looking into whether it was a killer who acted alone or who might have had some level of support from the terror network. U.S. intelligence officials were offering assistance in the investigation, as is standard practice in any case involving a close ally.
COMMENT: Some Obama leftovers in the administration will desperately try to blame this on a "lone wolf." There are no lone wolves. Someone, or some group, radicalized this young killer to the point where he killed himself while looking directly into the faces of his young victims. No lone wolf he. Oscar Hammerstein II said it well in the musical play, "South Pacific": "You've got to be taught to hate."
Terror attacks have now become regular features in Europe and Britain, as we've pointed out. We're getting too used to them.