Police mentioned they were found close to a shopping centre and ended up all aged among 15 and 25.
They were dumped there by drug cartel members fighting over the control of the medications enterprise in the city.
More than 30,000 folks have been killed in drug-linked violence in Mexico since late 2006.
President Felipe Calderon has deployed countless numbers of troops to battle the drug cartels, and claims to be making development in decreasing their influence.
But critics of Mr Calderon's insurance policies say they have elevated the stage of violence with no decreasing the flow of cocaine and other medications into the US.
Human rights teams have also raised worries that employing the military has uncovered civilians to achievable abuse ( via bbc.co.uk ).