Four former Blackwater security guards were found guilty Wednesday in the 2007 shootings of more than 30 Iraqis in Baghdad, and a federal judge ordered them immediately to jail.

In an overwhelming victory for prosecutors, a jury found Nicholas Slatten guilty of first-degree murder. The three other guards — Paul Slough, Evan Liberty and Dustin Heard — were found guilty of multiple counts of voluntary manslaughter, attempted manslaughter and gun charges.