Soldiers in the Mexican border state of Tamaulipas said on Monday they had seized two armored freight trucks from a metalworking shop believed to be altering the vehicles for local drug cartels. The Defence Department said the trucks were found on Saturday during a raid on the property in the city of Camargo. Inside, soldiers found two trucks that had inch-thick (2.54 centimetre-thick) sheet steel welded over the cabin, doors and cargo container, and were fitted with primitive fixed turrets and loopholes be used as firing ports.