A soldier keeps guard where a mass grave was discovered in the Vicente Suarez neighborhood in Durango, May 4, 2011.
A soldier keeps guard where a mass grave was discovered in the Vicente Suarez neighborhood in Durango, May 4, 2011. Heriberto Rodriguez/MCT
A soldier keeps guard where a mass grave was discovered in the Vicente Suarez neighborhood in Durango, May 4, 2011. Heriberto Rodriguez/MCT