At least nine dead after dozens found inside Texas truck

At least nine people are dead and a truck driver faces charges, after dozens of people were found inside a sweltering tractor trailer without a water supply in San Antonio.
Authorities say they were victims of -quote- 'ruthless' human traffickers... and were hot to the touch when help arrived. Temperatures outside the vehicle topped 100 degrees fahrenheit.
SAN ANTONIO FIRE CHIEF, CHARLES HOOD, SAYING:
"Our paramedics and firefighters found each one of them had heart rates over about 130 beats per minute.... it was a mass casualty situation for us so we treated it just like you do for an airline crash or any major kind of incident so each one of those persons has a number and a tag. We're going to have to reconcile who they are."
Officials say the people in the truck ranged from school-age juveniles to adults in their 20s and 30s.
The Department of Homeland Security has joined the investigation, as prosecutors search for other people responsible.