Authorities are pictured at the Cascade Mall following reports of an active shooter in Burlington, Washington. REUTERS/Matt Mills McKnight

Authorities are pictured at the Cascade Mall following reports of an active shooter in Burlington, Washington. REUTERS/Matt Mills McKnight

Authorities are pictured at the Cascade Mall following reports of an active shooter in Burlington, Washington. REUTERS/Matt Mills McKnight

September 24, 2016 11:46 AM (UTC+8)