At least 9 dead after being found in tractor-trailer

(CBSNews) SAN ANTONIO -- At least 9 people died after being crammed into the back of a sweltering tractor-trailer found parked outside a San Antonio Walmart, authorities said Sunday in what they described as an immigrant-smuggling attempt gone wrong.

The driver was arrested, and nearly 20 others rescued from the rig were hospitalized in dire condition, many with extreme dehydration and heatstroke, officials said.

Authorities were called to the parking lot late Saturday night or early Sunday and found the deceased inside the 18-wheeler. One of the victims died at the hospital, Jennifer Elzea, a U.S. Immigration and Customs Enforcement spokesperson, told CBS News.

The victims "were very hot to the touch. So these people were in this trailer without any signs of any type of water," San Antonio Fire Chief Charles Hood said.

Based on initial interviews with survivors, ICE Acting Director Thomas Homan told The Associated Press there may have been more than 100 people in the truck at one point. Thirty-eight were found inside, and the rest were believed to have fled or been picked up, authorities said.

Homan said some of the survivors told authorities they were from Mexico.

A person from the truck approached a Walmart employee in a parking lot and asked for water, San Antonio police said. The employee gave the person the water and then called police, and when officers arrived they found the eight people dead in the back of the trailer, police Chief William McManus said.

Firefighters had been called to the scene at about 12:30 a.m. Sunday, CBS San Antonio affiliate KENS-TV reports. Two AirLIFE choppers and at least 29 fire units responded to take care of the victims.

U.S. Immigration and Customs Enforcement agents and San Antonio police were also called to the scene.

"By any standard, the horrific crime uncovered last night ranks as a stark reminder of why human smuggling networks must be pursued, caught and punished," Homan said in a statement.

Investigators checked store surveillance video, which showed vehicles had arrived and picked up other people from the tractor-trailer, police said.

"We're looking at a human-trafficking crime," Police Chief William McManus said, calling it "a horrific tragedy."

Police did not confirm the age range for the injured or deceased. Authorities said the two youngest surviving injured victims are 15-years-old, KENS-TV reports.

The temperature in San Antonio had been in the 90s just before the victims were found dead. Authorities said the truck didn't have a working air conditioning system despite the blistering summer heat. The National Weather Service said the temperature in San Antonio hit 101 degrees just before 5 p.m. Saturday and didn't dip below 90 degrees until after 10 p.m.

Some of those in the truck ran into the woods, leading to a search, McManus said. Hours after the living and the dead were taken away, a helicopter hovered over the area after daybreak, and investigators were still gathering evidence from the tractor-trailer, which had an Iowa license plate but few other markings.

"Imagine their suffering, trapped in a stifling trailer in 100-plus degree heat. The driver is in custody and will be charged," U.S. Attorney Richard Durbin Jr. said in a statement.

San Antonio Mayor Ron Nirenberg called the incident a tragedy that "came to our doorstep overnight."

"With compassionate hearts, our city prays for the victims and the families who will never see their loved ones again," Nirenberg said in a statement.

Federal prosecutors said James Mathew Bradley Jr., 60, from Clearwater, Florida, was taken into custody. No immediate charges were filed.

The police department said the U.S. Homeland Security Department was taking the lead in the investigation.  

It was just the latest smuggling-by-truck attempt to end in tragedy. In one of the deadliest cases on record in the U.S., 19 immigrants locked inside a stifling rig died in Victoria, Texas, in 2003.

In the 2003 case, the immigrants were being taken from South Texas to Houston. Prosecutors said the driver heard them begging and screaming for their lives but refused to free them. The driver was sentenced to nearly 34 years in prison.

The Border Patrol has reported at least four truck seizures this month in and around Laredo, Texas. On July 7, agents found 72 people crammed into a truck with no means of escape, the agency said. They were from Mexico, Ecuador, Guatemala and El Salvador.

Authorities in Mexico have also made a number of such discoveries over the years.

Last December, they found 110 migrants trapped and suffocating inside a truck after it crashed while speeding in the state of Veracruz. Most were from Central America, and 48 were minors. Some were injured in the crash.

Last October, also in Veracruz state, four migrants suffocated in a truck carrying 55 people.