Security forces armed with rifles and armored TOMA vehicles used by Turkish riot police could be seen at the site in photos taken by witnesses.
The general had even reportedly attempted to seek asylum in the US, but his plea was apparently rejected.
Incirlic Air Base is used by both the Turkish and US militaries and is vital to the US-led anti-terror bombing campaign in Syria and Iraq. It also serves as one of six NATO storage sites for US tactical nuclear weapons in Europe. The exact number of nuclear bombs kept at the base is unknown, although, according to various estimates, it may store up to 90 warheads.