A U.S. Marine and his wife apparently were killed by his own. California authorities are holding four U.S. Marines they say tortured and killed a bi-racial couple from Brooklyn, N.Y., in their San Diego-area home. The Marines apparently served under the command of Brooklyn-raised  Sgt. Jan Pawel Pietrzak, of  Bensonhurst, who, with his wife, Quiana, were found bound and gagged in the ransacked house, each shot in the head execution-style, reports The New York Daily News.  Pietrzak was the suspects’ sergeant at Camp Pendleton, according to Quiana’s mother. Quiana Jenkins-Pietrzak, 26, worked for the county’s Black Infant Care Center. Pietrzak’s mother, Henryka Pietrzak-Varga, said she had prepared herself “for the possibility that my son could die in Iraq.” “But to die like this, in their own home?” she told the News.  Read the rest here.