A fire that broke out inside the men’s section of a migrant detention facility in Ciudad Juárez, Mexico, has claimed the lives of at least 39 individuals.

According to the National Institute of Migration (INM), a Mexican federal agency, a total of 68 men from Central and South America were in the building at the time of the fire.

“It is with deep sadness and grief that we learned of the fire that occurred inside the INM in Ciudad Juárez,” the city’s federal deputy, Andrea Chavez, tweeted on Tuesday.

The facility is adjacent to the border town of El Paso, Tex., and a major crossing point for migrants attempting to illegally enter the United States.