Edinburg, Texas (AP) — Police in Texas acting on a tip found 16 immigrants locked inside a tractor-trailer parked at a gas station about 20 miles (30 kilometers) from the border with Mexico, less than a month after 10 people died in the back of a hot truck in San Antonio.

Edinburg Assistant Police Chief Oscar Trevino says the immigrants may have been locked inside the 18-wheeler in Edinburg for at least eight hours before being freed by officers late Sunday morning. He had earlier said there were 17 immigrants locked in the tractor-trailer before correcting the number on Monday to 16.

Trevino...