Two men have been charged in connection with the deaths of 51 migrants who were found in sweltering conditions in a truck in San Antonio, Texas on Monday.
According to criminal complaints filed the same day in US District Court for the Western District of Texas, Juan D'Luna-Mendez and Juan D'Luna-Bilbao have been charged with possession of a weapon by an alien illegally in the United States.
Both men are Mexican nationals residing in the US illegally.
The authorities were able to locate them using the vehicle's registration plate.
The victims include migrants from Mexico, Guatemala and Honduras.
Sixteen people, four of them children, are being treated at medical facilities.