Arkansas ? A massive drug-trafficking ring circulated methamphetamine around the country via buses, vehicles disguised as satellite TV trucks, and complex, electronically triggered hiding spots inside cars, authorities said Thursday.

The drug trade began in Mexico, where methamphetamine can be made more easily than in the U.S., said Jane Duke, federal prosecutor for the eastern district of Arkansas. Many U.S. states, including Arkansas, regulate the sale of ephedrine and pseudoephedrine, ingredients found in cold medicine that can be used in bulk to make meth.

A three-year investigation – dubbed “Tienda Hielo” or “Ice Store” – into the drug ring has led to about 65 arrests and the seizure of more than 100 pounds of meth, which would have a street value of about $11 million, Duke said. Local, state and federal authorities announced the drug bust Thursday.

Duke said the meth had a purity level greater than 80 percent and was shipped from regional hubs in Dallas, Phoenix, and San Diego to the Batesville area before distribution to cities that included Memphis, Tenn.; Kansas City, Mo.; Des Moines, and Indianapolis.