On Monday, US police made a macabre discovery in San Antonio, Texas, not far from the border with Mexico. Dozens of people were found dead in a truck, and several have since died in hospital.
A total of 53 of the people in the truck are now dead.
Two people are charged in the case, among them a 45-year-old man who is said to have driven the truck. He claims not to have known that the air conditioner in the truck did not work, according to BBC.