Turkish prosecutors and police are conducting searches at Turkey’s Incirlik air base in connection with the failed coup, Turkish media reported. The base is used by both the Turkish and US air forces.

The authorities entered the base in southern Turkey on Monday, state-run Anadolu news agency reported, adding that the investigation is connected with the coup attempt.

Over the weekend, the airbase’s commander, General Bekir Ercan Van was detained at Incirlik by Turkish authorities along with over a dozen lower ranking officers. They all stand accused of complicity in the attempted coup.