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