Fox News Weather Center

10 die after being trapped in sweltering hot truck at San Antonio Walmart

Authorities uncovered a gruesome scene in San Antonio, Texas, over the weekend when they found eight people dead in the back of a sweltering tractor-trailer at a Walmart parking lot. At least 38 people total had been crammed inside the trailer.

A ninth victim died at a nearby hospital on Sunday, and at least 20 people were hospitalized in ‘dire’ condition due to dehydration and heat stroke, the Associated Press reported. The 10th fatality was confirmed Monday morning, officials told My San Antonio.

In a press conference early Sunday morning, San Antonio Police Chief William McManus called the incident a "horrific tragedy" and said police were investigating a "human-trafficking crime."

McManus added that the driver of the truck was in custody and the U.S. Department of Homeland Security was involved in the investigation.

tractor trailer deahts

San Antonio police officers investigate the scene where eight people were found dead in a tractor-trailer loaded with at least 30 others outside a Walmart store in stifling summer heat in what police are calling a horrific human trafficking case, Sunday, July 23, 2017, in San Antonio. (AP Photo/Eric Gay)

San Antonio Fire Chief Charles Hood said some of the victims were "very hot to the touch" and had been locked in the trailer with no signs of water and the air conditioning was not working.

Highs over the weekend in San Antonio hovered near 100 degrees Fahrenheit, with lows dipping only into the mid-70s.

Police were alerted to the scene either late Saturday or early Sunday when a person from the truck asked a Walmart employee for some water. The employee then called the police. It’s unclear how long the truck had been parked in the lot, but officials said they were reviewing surveillance video.