The juries returned the indictments in San Antonio on Wednesday, charging Homero Zamorano Jr., 46, of Pasadena, Texas, and Christian Martinez, 28, of Palestine, Texas, with one count each of conspiracy to transport undocumented migrants resulting in death; transportation of undocumented migrants resulting in death; conspiracy to transport undocumented migrants resulting in serious bodily injury and placing lives in jeopardy; and transportation of undocumented migrants resulting in serious bodily injury and placing lives in jeopardy, according to a Department of Justice news release.
If convicted, the men could face the death penalty on the most serious charges, the DOJ said.
Juan Claudio D’Luna-Mendez, 23, and Juan Francisco D’Luna-Bilbao, 48, both citizens of Mexico, are also charged with one count each of possession of a firearm while unlawfully present in the US, according to the DOJ. If convicted, the agency says they could face up to 10 years in prison.
CNN has reached out to attorneys for each man for comment.
While conducting surveillance on the home, police saw both men at the residence and found a firearm in the console of a truck D’Luna-Bilbao was driving.
Both men are Mexican nationals who were residing in the US illegally, according to the affidavit.
In addition to the 53 people who died, nearly a dozen others were hospitalized for heat-related conditions after being stuck inside a refrigerator tractor-trailer that was found abandoned on the outskirts of San Antonio.
Authorities were alerted to the scene on June 27 after an employee working in a nearby building heard cries for help. When they arrived, authorities found the tractor-trailer full of people, some on the ground and in nearby brush, “many of them deceased and some of them incapacitated,” according to the DOJ.
Fire officials said patients on the scene were hot to the touch and suffering from heat stroke and exhaustion. The truck had no apparent working air conditioning and there was no sign of water inside, according to San Antonio Fire Chief Charles Hood.
Temperatures on the day the truck was found ranged from the high 90s to low 100s, according to the National Weather Service.