Bullet casings still littered the ground on Friday in Coatepec Harinas, a troubled municipality southwest of Mexico City, a day after 13 police officers on patrol were brutally murdered in an ambush by suspected gang members.
Forensic teams and dozens of heavily armed police and military officials gathered at the cordoned off crime scene with checkpoints in place after what was one of the worst mass slayings of Mexican law enforcement officials in years.
Some residents looked on from their homes, shaken by the violence that rocked the small town nestled between verdant hills and . . .
