Ivan Guzman was arrested on Feb. 13, 2005, in Guadalajara, allegedly as he prepared to kill a man for losing a drug shipment in Texas.
He has also been accused of killing Canadian woman Kristen Paige Deyell and Mexican man Cesar Augusto Pulido outside a bar in the city of Zapopan in April 2004.
Joaquin Guzman escaped from prison in 2001 and allegedly went on to start a bloody turf war that has killed hundreds of people on the Mexico-U.S. border.
He is one of Mexico's most-wanted fugitives, and U.S. authorities have offered a $5 million reward for his capture.