Prof. Dr. Abdusselam Uluçam, former rector of the Batman University and the head of the excavation team at Hasankeyf’s historical area, was detained as part of an investigation into the Gulen movement while he on duty inspecting the work on the ground on July 8.

Ulucam was round up at Hasankeyf excavation area and taken to Batman police station for interrogation on Saturday.

Hasankeyf is an 12,000-year-old ancient settlement, located in Turkey’s eastern province of Batman, that survived 7 empires including Byzantines, Romans, Seljuks, Ottomans. The historic town is expected to be submerged under 200 feet of water once a now-constructed hydroelectric dam is completed.

Turkish government pinned the blame for the July 15, 2016 coup attempt on the Gulen movement and detained more than 120,000 people over links to the movement so far. The group denies involvement.