While he was in prison, Guzmán's drug empire and cartel continued to operate unabated, run by his brother, Arturo Guzmán Loera, known as "El Pollo", with Guzmán himself still considered a major international drug trafficker by Mexico and the U.S. even while he was behind bars. Associates brought him suitcases of cash to bribe prison workers and allow the drug lord to maintain his opulent lifestyle even in prison, with prison guards acting like his servants. He met his longtime mistress and later Sinaloa associate, former police officer Zulema Hernández, while in prison, where she was serving time for armed robbery. Hernández later controlled Sinaloa's expansion into Mexico City, but in 2008 her body was found in a trunk, carved with multiple Zs, signifying Los Zetas, Sinaloa's archrivals.