SAN ANTONIO (AP) - A U.S. official says the death toll from people found in the back of a sweltering tractor-trailer in the parking lot of a San Antonio Walmart has risen to 10.
 
Thomas Homan, acting director of U.S. Immigration and Customs Enforcement, told The Associated Press that two people died in a hospital. Eight dead bodies were found in the truck.
 
Based on initial interviews with survivors, Homan says there may have been more than 100 people in the truck. Thirty-eight were found inside. The rest are believed to have fled or been picked up.
 
Homan says some survivors have identified themselves as Mexican nationals. Four of the passengers are believed to be between 10 and 17 years old, and at least one of them is in serious condition.