The bodies of more than 40 people have been found in a truck on the outskirts of the city of San Antonio in the US state of Texas.

The dead are probably migrants who entered the United States illegally, US media reported on Monday (local time), citing investigators.

At least 12 other people were found alive and taken to nearby hospitals.

The police were therefore looking for the driver of the semi-trailer truck, who had left his vehicle in a remote area.

It was initially unclear why the people had died.

According to reports, it has been very hot in San Antonio in the past few days.

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