The Mexican government has offered a $3.8 million reward for information that leads to the arrest of Joaquin “El Chapo” Guzman, the notorious drug kingpin who escaped from a maximum-security prison Saturday night through a mile-long underground tunnel.

The above photos reportedly show the tunnel, which was 30-feet below ground and equipped with ventilation, lighting, and a motorcycle track. It reportedly took a year to build, and required the removal of 3,250 tons of dirt.

Thirty-four workers from Altiplano prison have been interrogated since the escape, and three, including the prison director, have been fired. Mexican Interior Minister Miguel Ángel Osorio Chong told CNN that prison employees must have helped Guzman. The 24-hour surveillance system in his cell only had two blind spots, both of which were used by Guzman prior to the escape, and the bracelet used to monitor his movement had been removed.

CNN also reports that Guzman was clean shaven at the time of his escape, which unfortunately means those photos of him enjoying a post-escape beer are not real.

Meanwhile, the Associated Press reports that the DEA learned about the Sinaloa Cartel’s “potential operations to free Guzman” in March 2014, one month after his arrest. A U.S. official told the AP that the DEA notified their Mexican counterparts about those plans 16 months ago, though Chong has denied those allegations.

Image via AP. Contact the author at taylor@gawker.com.