Convicted murderer Cesar Hernandez allegedly killed Abigail Esparza Reyes, a member of Mexico's "Gringo Hunters," in a shootout last week.

Cesar Hernandez was wanted for the shooting death of Abigail Esparza Reyes, the leader of a unit known as "Gringo Hunters," which dedicates itself to arresting U.S. fugitives in Mexico.

An inmate convicted of first-degree murder in Los Angeles County who escaped last year in Central California is now back in custody.