A federal appeals court on Friday reinstated the prosecution of a group of Blackwater security guards charged in Washington with manslaughter and weapons violations for their alleged roles in a shooting in Baghdad that killed more than a dozen civilians.

In December 2009, Judge Ricardo Urbina of U.S. District Court for the District of Columbia dismissed the Justice Department prosecution of five guards, saying the prosecution was tainted through the improper use of compelled statements the defendants made to investigators following the shooting in September 2007. DOJ appealed the ruling.