Driver Homero Zamorano and Three Others Charged as Toll Hits 53

The bodies of at least 53 people were found "stacked" inside the tractor-trailer of a truck near San Antonio, Texas. 

This may be the deadliest incident of human trafficking in the United States in recent memory. 

Officials report that 16 more people, including four children, were taken to area hospitals.  

Three suspects have been arrested by law enforcement.  

There is currently an investigation being conducted by US Homeland Security. 

According to San Antonio police chief William McManus, a city worker heard a call for help from the abandoned truck on Monday before discovering the grisly scene. 

The "tragic loss of life" in Texas was described as "horrifying and heartbreaking" by President Joe Biden