Mexican police have released the wife of one the nation's most wanted drug lords after taking her into custody, prosecutors said.

Griselda López Pérez, wife of Joaquín "el Chapo" Guzmán Loera, was freed after being taken in custody during a raid in the western state of Sinaloa, a statement from prosecutors said.

López Pérez underwent police questioning on her potential entanglements with the alleged drug pin, the statement said.

Joaquín "el Chapo" Guzmán Loera heads the powerful Sinaloa cartel, which controls drug trafficking on both sides of the U.S.-Mexico border, according to investigators. Police blame the Sinaloa and other cartels for a surge in violence in the region.

Forbes Magazine estimates Guzmán Loera's fortune at $1 billion. His nickname - "El Chapo," means Shorty. He escaped from a Mexican prison in 2001.

In a consolidated effort with Mexico's military forces, drug enforcement agents scoured several properties this week near Colinas de San Miguel, confiscating a large number of items including hand grenades, luxury cars and computers.

Authorities took López Pérez, who is also known as Karla Pérez Rojo, into custody during one of those raids.