Manchester Suicide Bomber was Known to British Authorities

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. CBS News confirmed Abedi was known to British authorities prior to the attack.An unnamed European security official told The Associated Press that Abedi was a Briton of Libyan descent. ISIS has claimed responsibility for the attack.Officials said one man was arrested Tuesday in southern Manchester in connection with the attack, and urged peo