it's monday, july 13th. >> announcer: from abc news, this is "world news now" with t.j. holmes and reena ninan. >> hey, good morning, everyone. we begin with a massive manhunt now going on in mexico following the brazen prison break that freed one of the world's most notorious drug lords. >> joaquin "el chapo" guzman was last seen saturday night. security experts say by now, he could be just about anywhere. details now from abc's chuck sivertsen. >> reporter: mexico's most notorious drug dealer is now also its most wanted man, again. these maximum security walls proved no prison for joaquin guzman, nicknamed el chapo, who pulled off a storybook jailbreak for a second time. >> this is a huge failure. he's one of the most powerful drug cartel leaders in mexico, if not the most powerful. >> reporter: guzman slipping through a small hole in his cell into a tunnel complete with ventilation, lights and a