Updated

Guatemala's top security official says the Zetas drug gang from Mexico had set up an operations center in the border province of Alta Verapaz where the government declared a state of siege Dec. 19.

Interior Minister Carlos Menocal says a two-week-old military offensive against the cartel is making progress. In his words, "This is just the beginning."

Menocal said Monday that authorities have seized planes, vehicles and $40,000 in cash. He said the Zetas "had their base, their hiding place, their operations center in Alta Verapaz."

The Zetas initially began on Mexico's Gulf coast, but have extended their operations to other parts of Mexico and into Central America.