#JulioCesarChavez Jr. shared a ring with #JakePaul last weekend, but the former boxing champ is now in a jail cell ... after #ICE Agents arrested Chavez Jr., a wanted man in #Mexico for his alleged connections to the cartels. Officials from the Department of Homeland Security tell TMZ Sports that 39-year-old Chavez Jr., the son of boxing legend Julio Ceasar Chavez Sr., was detained on Thursday over an active warrant out of #Mexico. The warrant, according to the U.S. gov, stems from his alleged involvement in organized crime and trafficking firearms, ammunition, and explosives. via tmz_tv • nathan.berganza