Sinaloa cartel leader Ismael "El Mayo" Zambada's case takes strange twist after he's jailed in the U.S.

The United States managed to arrest Mexico's most-wanted drug lord, but Mexican prosecutors - and the president — now say they are considering bringing treason charges against those who handed him over.

It's part of the long, strange trail of Sinaloa cartel leader Ismael "El Mayo" Zambada, who unexpectedly appeared on a flight that landed near El Paso, Texas, in July. That private plane flight was arranged by another drug capo who decided to turn himself in.

U.S. officials say Joaquín Guzmán López — a son of imprisoned cartel leader Joaquín "El Chapo" Guzmán — flew to the United States to turn himself in, but abducted Zambada before leaving Mexico and forced him onto the plane.