Washington (CNN) -- Ten Mexican nationals have been charged with last year's killings of three Americans connected to the U.S. Consulate in Juarez, Mexico, U.S. Attorney General Eric Holder announced Wednesday. The 10 are among 35 members of the international gang Barrio Azteca charged with various counts of racketeering, murder, drug offenses, money laundering and obstruction of justice, Holder said. "Twelve of these defendants were arrested just this morning by teams of United States federal, state and local authorities in Texas and in New Mexico," Holder announced at a Justice Department news conference. U.S. Consulate employee Leslie Ann Enriquez Catton; her husband, Arthur Redelfs; and Jorge Alberto Salcido Ceniceros, the husband of another U.S. Consulate employee, were killed last March 13. Justice officials do not have a motive in the shootings, but they haven't ruled out a case of mistaken identity.
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A U.S. consulate employee and two others were killed in Mexico last year
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Ten Mexican nationals have been charged and seven are already in custody
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The 10 are among 35 members of the Barrio Azteca gang charged with various offenses
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U.S. authorities announced the indictments Wednesday
We will continue to stand with our partners in Mexico, and together, build on our unprecedented joint efforts to combat violence and protect the safety of the @placeholder and the Mexican people."