Father of one of the military cadets who were imprisoned in the aftermath of a failed military coup in July 2016, died of heart attack hours after visiting his son in Turkey’s notorious Silivri Prison in İstanbul.

According to a Twitter account managed by family members of the military cadets, Yusuf Ünal has been given a life sentence on coup charges and thus being held in Silivri since July 2016. His father had reportedly visited him once a month. Following his last visit on June 10, he died of heart attack on the way back to his hometown Erzurum.

A total of 259 military cadets were detained on coup charges on July 16, 2016 and were arrested four days later. The cadets were indicted one year after they were sent to jail, and their trial was concluded in May 2018. One hundred seventy-eight of the cadets were given life sentences on charges of attempting to overturn the constitutional order and attempting to overthrow the Turkish government and parliament by use of force as well as membership in a terrorist organization.

The cadets say they had no information about a coup attempt unfolding and were acting on orders from their superiors, who told them there was a terrorist attack.

As of January 2020, at least 355 military cadets have been given life sentences on coup charges.

The military coup attempt killed 355 people and wounded more than a thousand others. Immediately after the abortive putsch, the Justice and Development Party (AKP) government along with President Recep Tayyip Erdoğan pinned the blame on the Gülen group. The group denies any involvement.