This story was originally published by Mother Jones and is reproduced here as part of the Climate Desk collaboration.

Quintero Jones was an inmate at the McConnell Unit in Beeville, Texas. One day, when the outdoor temperature had reached 98 degrees and humidity made it feel like 110, the 36-year-old collapsed in his cell and lay on the floor gasping for breath. According to a federal lawsuit filed by his family members in July, by the time help arrived, it was too late. His autopsy revealed that his death was caused by an asthma attack.

“Everybody knows high temperatures can be lethal, particularly to those who can’t take steps to cool themselves,” says David Fathi, the director of the National Prison Project at the American Civil Liberties Union. “Whenever there’s an extreme heatwave, people die — prisoners and nonprisoners alike.”