 The warrant for Barba's arrest was issued February 14, 2011, the day before Zapata was shot.On January 30, 2012, Barba, who claimed to be working with Los Zetas in illegally exporting at least 44 weapons purchased through straw buyers, was sentenced to 100 months in prison.On November 23, 2012, two firearms linked to the ATF were found at the scene of a shootout between Sinaloa cartel members and the Mexican military.