Abdo Baran, an 80-year-old Kurdish man who suffered from stage-4 colon cancer, has died in prison on Thursday in southeastern Turkey’s Mardin province.

The Kurdish man had repeatedly been denied release from prison to seek proper treatment.

Baran’s death was announced on Twitter by Peoples’ Democratic Party (HDP) deputy Ömer Faruk Gergerlioğlu, who expressed outrage that the ailing old man had not been released. “This is completely inhumane!” he said. “I have no words left to say. This old man died handcuffed to bed rails. He has been in prison for the last 25 years.”

Since a failed coup attempt in 2016, there have been many cases of people who died in jail, some suspiciously, because they were denied crucial treatment or subjected to maltreatment or acts of torture. So far, at least 106 people died in Turkish prisons since July 2016, the Bold news portal reported.