The battle at the Topo Chico prison in the northern industrial city of Monterrey was triggered by a dispute between rival leaders of the Zetas gang, authorities said.
Officials acknowledged that the prisoners had their own "self-government" at the facility, where 100 guards monitored 3,800 convicts.
After reclaiming control following yesterday's pre-dawn riot, authorities found half a kilogram of marijuana, 23 doses of crack cocaine, 30 doses of cocaine, 120 makeshift blades, 80 knives, 60 hammers, 400 lighters, 16 USB sticks, 10 MP3 players, and two 67-inch televisions, Rodriguez said.
An official at the state's human rights commission, Sylvia Puente Aguilar, said extortion, beatings and murders are common at the prison.
"There is a dispute because illegal activities have been detected inside, such as drug dealing," Aguilar told Milenio television.
The prison battle was triggered by a dispute over control of the facility between rival Zetas members Jorge Ivan Hernandez Cantu, alias "El Credo," and Juan Pedro Zaldivar Farias, alias "El Z-27," according to the authorities.
Relatives of victims sobbed as they read a list of the dead outside the prison. 12 other inmates were injured.
40 bodies have been identified and all had wounds consistent with stabbings or beatings with hammers and sticks, Rodriguez said.
A former inmate told AFP about a dangerous life inside the prison.
"You never sleep well because if you sleep deeply, the scorpion will sting you," said Juan, a 28-year-old former convict who was released last month.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
