Fearing third escape, Mexico moves drug boss Chapo constantly

By Lizbeth Diaz and Gabriel Stargardter MEXICO CITY (Reuters) - Deeply concerned that the world's most notorious drug kingpin, Joaquin "Chapo" Guzman, could escape for a third time, Mexico has beefed up security at his prison, reinforcing the floor of his cell and placing a guard on his door 24/7. Guzman, captured on Friday six months after a brazen prison break via a mile-long tunnel that burrowed right up into his cell, is now being held in isolation in another part of the prison, a Mexican security source said. The improved security measures also include reducing the number of inmates, quadrupling the number of cameras on the site and moving Guzman randomly, without warning, to different parts of the prison, Mexico government spokesman Eduardo Sanchez told Reuters.