Flinchum said at a Monday night news conference that they had a preliminary identification of the shooter at Norris Hall but were not releasing it.

• 这种嫌疑人身份本身就是很敏感的事情，会引起一系列的连锁反应和不可预料的后果，所以当局一般宣布嫌疑人身份都是经过慎之又慎的调查的。