SAN FERNANDO, Mexico - At the largest mass grave site ever found in Mexico, where 177 bodies have been pulled from deep pits, authorities say they have recovered few bullet casings and little evidence that the dead were killed with a gun.
Instead, most died of blunt force trauma to the head, and a sledgehammer found at the crime scene this month is believed to have been used in the executions, according to Mexican investigators and state officials. The search continued Sunday, with state officials warning they expect the count to rise.
