There have been found 42 bodies buries in mass graves in Mexico this month. I remember reading news stories of large numbers of kids in Mexico going missing a few years ago without a trace. It's possible that some of the bodies belong to those kids.
http://www.cnn.com/2013/11/25/world/americas/mexico-mass-graves/index.html?sr=fb112613bodiesmexico1130a
http://www.cnn.com/2013/08/22/world/americas/mexico-bodies-found/index.html