Thieves broke into a freight storage area at the Pacific coast seaport of Manzanillo and stole 20 freight containers loaded with partly refined gold and silver ore and television sets, the Mexican Employers Federation said.
According to local press reports, about 10 armed thieves forced their way into a private freight dispatch yard near the port, subdued employees and then took several hours to search for the shipping containers they wanted.
The thieves then apparently hooked up the containers to trucks and drove away with them. No sign of the containers, or their contents, has been seen since.
Freight theft is a serious problem in Mexico, but it usually involves thieves hijacking one truck at a time on highways — not driving off with 20 freight containers.
Articles like television sets are usually quickly sold off in the country’s extensive black markets, but it was unclear where thieves could sell tons of partly processed gold or silver ore.