New evidence obtained by VICE World News paints a chilling picture of the killing of 19 migrants near the U.S border in January.
Security forces in Mexico have a long history of corruption and collusion with criminal groups. The investigation of a massacre of 19 people last month has implicated local police officers.
The killing of migrants passing through Mexico on their way to the United States is common, and justice for the victims is rare.
Hundreds of bodies of people who died at home had been kept on beds, or the floor, or even outside on the pavement.
“My fear is that we won’t have supplies next week, when cases are expected to spike,” said Maria Eugenia Landaeta, Caracas University’s head of infectious diseases.