Three people are in custody following the grim discovery of 46 dead migrants inside the back of a truck near San Antonio, Texas.
Emergency services, including 60 fire fighters, 20 fire engines and 10 medical units were called the horrific scene about 6pm on Monday (local time) after a city worker claimed he found bodies inside a truck trailer parked next to railroad tracks in southwest San Antonio, officials said.
The worker told authorities he was alerted to the tragic discovery after hearing "cries for help".
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