A Border Patrol spokesman said the immigrants from Mexico, El Salvador and Guatemala were in good condition after being found early Monday at the Interstate 10 checkpoint in Sierra Blanca, about 85 miles (136 kilometers) southwest of El Paso. The spokesman said they appeared to be in the US illegally.
The driver, Irving Hernandez, has been booked into the El Paso County Jail in El Paso on a federal alien smuggling charge. No bond has been set. Jail records don't list an attorney for him.
The Border Patrol said the 16 comprised of eight people from El Salvador, six from Mexico and two from Romania. A man and woman, both Cuban nationals, were in charge of that truck, a Border Patrol spokesman said.
Three weeks ago, 10 people died after being found in a sweltering rig parked at a Walmart in San Antonio. Nearly 20 of those rescued from the rig were hospitalized in dire condition, many suffering from extreme dehydration and heatstroke.
More From This Section
Officials said 39 people were inside when rescuers arrived, and the rest either escaped or hitched rides to their next destination.
Border apprehensions have risen each month since falling in April to a 17-year low.
Tractor-trailers emerged as a popular smuggling method in the early 1990s amid a surge in US border enforcement in San Diego and El Paso, Texas, which were then the busiest corridors for illegal crossings. Before that, people paid small fees to mom-and-pop operators to get them across a largely unguarded border.