Sinaloa drug cartel informer leads to arrests , officials say . The U.S. government has been tracking the Beltran Leyva organization for years and says it is responsible for more than 100 murders in Mexico since 2006. Defendants range in age from early 20s to late 40s , officials say .
Sinaloa drug cartel informer leads to arrests , officials say . Drug unit says it has seized almost $ 3 million in cocaine . Defendants range in age from early 20s to late 40s , officials say .