Two Guatemalan nationals have pleaded guilty in connection with one of the deadliest human smuggling incidents in recent memory — a catastrophic crash that killed 56 people and injured more than 100 others.

The tragedy occurred when a smuggling truck overturned in chaotic circumstances. Aerial and ground images from the scene show the overturned vehicle, scattered belongings, and a large emergency response as authorities worked to aid the victims.

The case has highlighted the extreme dangers faced by migrants and the ruthless tactics sometimes used by smuggling operations.

The guilty pleas mark a significant development in the federal investigation into the deadly incident.

This remains one of the worst human smuggling tragedies in U.S. history, with many families still mourning the loss of loved ones.