Mexican security forces captured Ovidio Guzmán, an alleged drug trafficker wanted by the United States and one of the sons of former Sinaloa cartel boss Joaquín “El Chapo” Guzmán, in a pre-dawn operation Thursday that set off gunfights and roadblocks across the western state’s capital. Defence Secretary Luis Cresencio Sandoval said Army and National Guard personnel had captured a son of “El Chapo.” Ovidio Guzmán had not been one of El Chapo’s better-known sons until an aborted operation to capture him three years ago.