Update 4:20 P.M.
D.C. police say a Holocaust Museum guard, Stephen Tyrone Johns, and the alleged shooter, James von Brunn, were rushed to George Washington University Hospital.
Police have now confirmed that Johns has died.
Authorities arrested worker in the Alabama school's engineering division who they say made and sold the dug GHB
The nine-year-old girl's uncle is believed to have abducted her from outside her Benbrook home on Friday