The common-law wife of imprisoned drug lord Joaquin "El Chapo" Guzman has filed a complaint with Mexico's National Human Rights Commission complaining of his treatment in prison.

Emma Coronel is the mother of twin daughters with Guzman. She told local media Monday outside the commission's Mexico City office that she had just filed the complaint charging that Guzman suffers from declining health.

Coronel has filed complaints before to pressure the government to improve conditions for the Sinaloa cartel's leader.

Guzman was rearrested in January after escaping from a maximum-security prison last year. He is fighting extradition to the U.S. from the northern border state of Chihuahua.

A judge last week rejected five appeals Guzman filed to avoid extradition. He can still ask a higher court to review the judge's rejection.