As Mexicans debated the brazen prison breakout of drug kingpin Joaquin "El Chapo" Guzman on Tuesday, it became increasingly apparent that there had been signs for months that something was brewing at the maximum-security Altiplano prison where he was held.
The tunnel that Guzman used to make his escape ended up in an unfinished house in the middle of an empty field. The nearest residents said workers started building the house out of the blue and without permits about 10 months ago.