At Least 40 Found Dead in Back of Tractor Trailer

At least 40 people were found dead inside a tractor-trailer in South Texas, according to a US official.

The dead were found in a truck in San Antonio. The official spoke to The AP on condition of anonymity because the information hadn't been made public.

Thousands of people have died trying to cross the U.S. border from Mexico in the last 50 years. Ten people died after being trapped in a truck in San Antonio. 19 people were found in a hot truck in 2003

The early 1990s saw a surge in U.S. border enforcement in San Diego and El Paso, Texas, which led to the emergence of big rigs as a popular way to smuggle people.

People used to pay small fees to get across the border. After the 2001 terror attacks in the U.S., migrants were led through more dangerous terrain and paid more money.

It's important to remember that heat poses a serious danger when it's inside a vehicle. The weather in San Antonio was mostly cloudy but warm.

That's right.

Spagat reported from California.