Customs authorities at the border crossing from the Texas into Mexico, at Ciudad Juarez, found some 3,500 cartridges of ammunition concealed on a bus.
The ammunition was found in the luggage of a female passenger on a public bus coming from El Paso.
One thousand of the cartridges were 9mm, another thousand were .30, with more of varying calibers, according to reports.
The woman carrying the ammo said that it was for her husband, who works in law enforcement.
Guns and ammunition are tightly controlled in Mexico, and are often smuggled in from the neighboring United States. A member of the Zetas drug gang recently told the authorities that his group buys all its guns in the U.S. He said they have been finding it increasingly difficult to bring weapons over border crossings, due to tightened security, and that they often take them over the Rio Grande.
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