Ali Osman Karahan, a 92-year-old Turkish man who had spent some 15 months in Isparta prison over alleged links to Turkey’s Gülen group, died on Thursday, the Bold news reported.

The purge-victim man suffered from stage 4 prostate cancer and he reportedly had one kidney.  He was a former disciple of the Ottoman-Kurdish scholar Said Nursi, the teachings of whom later inspired Turkey’s Gülen group over the past years.

Karahan had recently been released from prison on probation due to his deteriorating health conditions.

Turkey experienced a military coup attempt on July 15 that killed over 240 people and wounded more than a thousand others. Immediately after the putsch, the Justice and Development Party (AK Party) government along with President Recep Tayyip Erdoğan pinned the blame on the Gülen movement.

The movement denies any involvement. However, the Turkish gov’t initiated a widespread purge aimed at cleansing sympathizers of the movement from within state institutions, dehumanizing its popular figures and putting them in custody.

More than 130,000 people have passed through police custody and 60,000 of them were remanded in prison like Karahan.

Karahan made it to the news last week as well after the government tried to transfer him to a prison in Afyonkarahisar, a province located some 100 km from Isparta.