In 2004, Williams served as the head of the Northern Military Region of Piura. According to Wayka, Williams allegedly collaborated with the Tijuana Cartel at the time, with 2010 WikiLeaks documents from the United States Embassy, Lima linking Williams to Captain Jonathan Huacac, who was accused of trafficking 700 kilograms of cocaine for the cartel. Diario La Primera reported that Huacac would host late-night parties with mariachis for prominent Mexican drug lords at the Piura Military Casino, with all of this occurring only away from the home of Williams. Captain Hilario Rosales Sánchez of the Peruvian National Police reported that photographs existed linking Williams and Huacac, though no actions were taken after concerns were sent to Lima, according to Rosales.
