At least 46 people have been found dead inside a tractor-trailer in a presumed migrant smuggling attempt in South Texas.
The official said 15 others in the truck were taken to hospitals in the San Antonio, where the bodies were found Monday.
The truck was found next to railroad tracks in a remote area on the city's southern outskirts.
Temperatures in San Antonio, which is about 250 km from the Mexican border, swelled to a high of 39.4 degrees Celsius on Monday with high humidity.
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