The Chief Public Prosecutor's Office in Ankara on Friday issued arrest warrants for 110 Turkish Air Forces staff over their suspected links to the Gülenist Terror Group (FETÖ).

Three colonels, two lieutenant colonels, six majors and three captains were among those ordered held in the operation spread over the capital and 15 other provinces, the prosecutor's office said.

Eighty five of the suspects have already been detained and all detainees were on active duty, it said.

FETÖ and its U.S.-based leader Fetullah Gülen orchestrated the defeated coup of July 15, 2016, which left 250 people dead and nearly 2,200 injured.

Ankara accuses FETÖ of being behind a long-running campaign to overthrow the state through the infiltration of Turkish institutions, particularly the military, police and judiciary.

Since the defeated coup attempt, operations have been ongoing in the military, police and judiciary, as well as in state institutions across the country, to arrest suspects with alleged links to the FETÖ.