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Police found at least 19 individuals dead in an abandoned mine in Pachuca, Hidalgo Friday, according to Mexican press reports.
Many of the victims were found in a advanced state of decomposition. The discovery was made going from court testimony of Los Zetas criminal gang members following an armed confrontation in Singuilucan, Hidalgo Friday.
Reports say nine police commanders in different municipalities in Hidalgo are undergoing investigation for selling security services to organized crime, and some arrests have been made, but no names have been released.
The mine entrance is in the Del Castillo district near the Universidad Autonoma del Estado de Hidalgo school, where firefighters and police have been working to extricate the dead.
Reports are a number of sites have been used in Hidalgo for mass graves including Pachuca, Omitlan and Mineral de la Reforma, although authorities say they searched the area, but found no more bodies.
Pachuca, Hidalgo is about 100 kilometers northeast of Mexico City.