20 Bodies Now Found in Mass Grave

PALOMAS, MEXICO - Mexican soldiers have now unearthed 20 bodies from a mass grave in the town of Palomas.

Troops acting on tips from several captured drug hitmen have been digging out the bodies for the past several days.

It is not clear who was buried in the graves.  The remains are believed to be at least a year old.

Drug violence has killed more than 31,000 people across Mexico since December of 2006.