A lawyer for drug lord Joaquin "El Chapo" Guzman said Wednesday his client now wants to be extradited as soon as possible to the United States because guards at a Mexican maximum-security prison won't let him sleep.

Lawyer Jose Refugio Rodriguez said Guzman told him to negotiate with U.S. authorities for a lighter sentence and confinement at a medium-security prison.

Rodriguez told Radio Formula Wednesday he talked to Guzman Tuesday at the Altiplano prison west of Mexico City.