Mexican officials have yanked 652 migrants off trucks at the border with the United States — including hundreds of unaccompanied children.
Border officials stopped three trucks in the crime-ridden Mexican state of Tamaulipas when they heard voices coming from inside sealed containers, the Wall Street Journal reported.
The migrants, mostly from Guatamala, were only discovered and freed when X-rays revealed their presence inside. Four men have been detained and are being questioned by Mexican authorities.
The bust is one of the largest human smuggling operations in recent memory, local officials said.
“This has no precedent in recent years, as far as I can remember,” said Luis Alberto Rodriguez, a spokesman for Tamaulipas, told The Journal. “The kids are calm. They are apparently