A physics teacher at a high school in Turkey’s Bursa province until he was dismissed, Gökşin Öz died of cancer at the age of 43, several sources reported.

Oz spent some time in prison as part of an investigation into the Gulen movement’s followers in the aftermath of the July 15, 2016 failed coup, online sources said adding that he was diagnosed of cancer amid grief over what he has been through recently. Oz passed over on Apr 21.

Opposition deputy Omer Faruk Gergerlioglu also confirmed Oz’s situation in his tweet: “He was diagnosed with cancer at an early age after he was removed with a post-coup government decree.”

Turkish government survived the attempt that killed over 240 people and wounded more than a thousand others, however; AK Party officials along with Erdoğan pinned the blame on the Gülen group and launched a widespread war on its alleged and real followers.

The group denies any involvement.

More than 90,000 people have been jailed while more than 150,000 have been removed from state posts due to alleged Gülen links since the coup attempt.