YEREVAN, MAY 23, ARMENPRESS. Police on Tuesday identified the man who blew himself up the previous night at an Ariana Grande concert in Manchester, England, as 22-year-old Salman Abedi. “Armenpress” reports CBS News confirmed Abedi 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 raids continued at addresses around the city.

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.

Manchester police confirmed the arrest of a 23-year-old man in the southern Chorlton neighborhood of the city on Tuesday morning. The suspect taken into custody was not identified, but police said the arrest was linked to the bombing. Witnesses said the man was smiling as he was apprehended.