Torres Marrufo, a prominent Sinaloa Cartel member, in Ciudad Juárez, Mexico. Torres Marrufo was indicted, but evaded law enforcement for a brief time. Finally, on February 4, 2012, Marrufo was arrested by the Mexican Police. On May 29, 2011, four Mexican Federal Police helicopters attacked a cartel compound, where they were met with heavy fire, including from a .50 caliber rifle. According to a report from the House Committee on Oversight and Government Reform, this rifle is likely linked to Fast and Furious. There have been questions raised over a possible connection between Fast and Furious and the death of U.S. Immigration and Customs Enforcement agent Jaime Zapata on February 15, 2011. The gun used to kill Zapata was purchased by Otilio Osorio in the Dallas/Fort Worth Metroplex, Texas (outside the area of responsibility for the ATF Phoenix field division which conducted Fast and Furious), and then smuggled into Mexico. Congressional investigators have stated that Osorio was known by the ATF to be a straw purchaser months before he purchased the gun used to kill Zapata, leading them to question ATF surveillance tactics and to suspect a Texas-based operation similar to Fast and Furious. In addition to Otilio Osorio, a Texas-based drug and gun trafficker, Manuel Barba, was involved in trafficking another of the guns recovered in the Zapata shooting. The timeline of this case, called "Baytown Crew", shows guns were allowed to walk during surveillance that began June 7, 2010. On August 20, 2010, Barba received a rifle later recovered in the Zapata ambush and sent it with nine others to Mexico. 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. One of the weapons was a Kalashnikov style WASR-10 rifle trafficked by Fast and Furious suspect Uriel Patino, and the other was an FN Herstal pistol originally purchased by an ATF agent. Mexican beauty queen Maria Susana Flores Gamez and four others were killed. One of the nineteen guns Mexican authorities said they found at the hideout of Joaquín "El Chapo" Guzmán, after his