Sureños have emerged as a national gang in the United States. [7] Mexican American street gangs originated in Los Angeles in the early 1900s as a result of various factors, including economic conditions and racial prejudice.

Sureño gangs in northern California are referred to as "Upstate Sureños." Some upstate Sureño gangs were established by relocated gang members from Southern California.

Just what is a Sureño? A Sureño is a Latino gang member who belongs to a street gang that identifies with, and is subservient to, the Mexican Mafia. He may be from northern or southern California, or from your city, or from Central America.

The Sureños are the umbrella organization for Hispanic street and prison gangs united under the Mexican Mafia. The purpose of the alliance of gangs is primarily to make more money for the drug lords, who are mostly prisoners in state penitentiaries.

Montelongo is a confirmed member of the Sureño gang. During the search, officers seized three firearms, 22 pounds of explosives, and digital devices. This is all the information that is known as of now, as this is an ongoing investigation. Copyright 2026 Nexstar Media Inc. All rights reserved.

Both the Norteños and Sureños operate under the direction of "shot callers," inmates who receive updates from three gang leaders controlling tier and yard security and education. There is only one shot caller for each jail.