Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

A Law enforcement officer looks on at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Christine and Michael Ybarra stand at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Onlookers gather at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Rose Perez holds her mother Scarlet Chavez at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 28, 2022. REUTERS/Go Nakamura

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 28, 2022. REUTERS/Go Nakamura

San Antonio Mayor Ron Nirenberg addresses the media at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Onlookers gather at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Onlookers and members of media gather at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Onlookers gather at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Law enforcement officers work at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

San Antonio Mayor Ron Nirenberg addresses the media at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

Community members wait on the side of the road at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

San Antonio Mayor Ron Nirenberg looks on at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

San Antonio Police Chief William McManus addresses members of the media at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal

San Antonio Fire Department Chief Charles Hood addresses members of the media at the scene where people were found dead inside a trailer truck in San Antonio, Texas, U.S. June 27, 2022. REUTERS/Kaylee Greenlee Beal