An image taken from security video shows the gunman who opened fire in the Cascade Mall in Burlington, Washington on Friday night, and who is still at large, released by the Washington State Patrol, September 24, 2016. Washington State Patrol/Handout via REUTERS

An image taken from security video shows the gunman who opened fire in the Cascade Mall in Burlington, Washington on Friday night, and who is still at large, released by the Washington State Patrol, September 24, 2016. Washington State Patrol/Handout via REUTERS

An image taken from security video shows the gunman who opened fire in the Cascade Mall in Burlington, Washington on Friday night, and who is still at large, released by the Washington State Patrol, September 24, 2016. Washington State Patrol/Handout via REUTERS

September 25, 2016 12:51 AM (UTC+8)