Several bodies found inside tractor-trailer in San Antonio

When the trailer was opened by the police, 38 people were discovered inside the back of the non-air-conditioned vehicle.

Police apprehended the driver of the truck at the scene.

"The truck was loaded with people", Hood said. Hood estimated the temperature in the truck could have reached 150 degrees Fahrenheit (65 degrees Celsius), likening it to an "oven".

First responders arrive to transport people found in a semi truck trailer. Apart from recovering the eight dead bodies, the officials also rescued 23 people from the tractor-trailer, who were in critical condition.

The survivors have been spread around seven hospitals in the San Antonio area. 17 others have injuries that at this time do not appear to be life threatening. The two youngest known victims are 15-years-old, Lopez said. A surveillance video shows a number of vehicles entering the parking lot to pick "up lots of folks that were in that trailer that survived the trip", McManus told ABC News.

Federal prosecutors said James Mathew Bradley Jr., 60, from Clearwater, Florida, was taken into custody. The Department of Homeland Security has also joined the investigation. An additional search will be conducted later this morning once the sun has risen.

The San Antonio Police Department did not respond to a request for comment.

Medical personnel declared 8 people deceased on the scene. They discovered an alien smuggling venture gone horribly wrong.

Last December, they found 110 migrants trapped and suffocating inside a truck after it crashed while speeding in the state of Veracruz.

Twenty of the victims were said to be in an "extreme or severe" condition. The driver will most likely be charged with human smuggling.

In the May 2003 case, the immigrants were being taken from South Texas to Houston. "These people were helpless in the hands of their transporters", Durbin said.

Police are calling the incident a horrific human trafficking case, according to The Associated Press.

"This is not an isolated incident. this happens all the time", McManus said.

Councilman Rey Saldaña (D4), whose district includes much of the Southside, woke up to a call from McManus at 2:30 a.m.

SAFD was called to the scene for multiple people suffering from heat and/or cold exposure.

Hood told reporters, "it was a mass casualty for us". "Unfortunately, the sad reality is that this unthinkable journey was perhaps the best alternative for individuals looking for a better life".

Illegal migration over the United States border with Mexico is an everyday fact.

The survivors were found by a Walmart employee who heard someone from the truck asking for water, and called the police, according to CNN.

  • Rogelio Becker