In St. Cloud, Minnesota, a man in a security guard’s uniform stabbed and injured nine shoppers at a mall on Saturday before he was shot dead by an off-duty police officer. The Minneapolis Star Tribune identified the man as Ahmed Adan, a 22-year-old born in Kenya of Somali descent who grew up in the U.S. An ISIS website claimed responsibility, calling the assailant a “soldier of the Islamic State.” FBI Special Agent Richard Thornton said the agency was looking into possible links to terrorism.

Richard Thornton: “We do not at this point in time know whether the subject was—it was in contact with, had connections with, was inspired by a foreign terrorist organization. That’s what the investigation is attempting to ascertain at this point in time.”