Mexican police say 55 bodies have been recovered from an abandoned mine that appears to have been used as a mass grave by drugs gangs

Human remains were first discovered in the silver mine near Taxco in Guerrero state at the end of May 2010. The bodies appeared to have been thrown down a 650ft ventilation shaft over a period of time, police said. Only six have so far been identified - one was the director of a local prison. Guerrero state is a focal point for drug-related violence that has claimed more than 22,000 lives in Mexico since 2006. Police are now checking other mine shafts in the area to see if bodies have also been dumped there. Some corpses have tattoos associated with the drugs gangs, police said. Local morgues have been overwhelmed by the number of bodies. While most of the drug-related violence over the past four years has been concentrated in northern Mexico along the border with the US, other regions have not been immune. Guerrero, in the south and with a Pacific coastline, has also seen bloody turf wars for control of drug smuggling routes.