WASHINGTON - The Islamic State group is claiming responsibility for a central Minnesota mall attack that left nine people with stab wounds and the suspect dead. Police haven't named the attacker but a man tells the Star Tribune of Minneapolis that it was his son. Ahmed Adan, who's Somali, says his son, 22-year-old Dahir Adan, came to the U.S. 15 years ago and was a college student in St. Cloud. The attacker was shot dead by an off-duty police officer.