Ilham Tohti, Uighur academic and PEN member has been banned from attending a Turkic Culture conference in Izmir, Turkey. Reports claim police officials arrived at his Beijing home on 15 April and warning him against making the trip. Tohti had already received his Turkish visa, and permission to attend the conference from Beijing’s Central Nationalities University, where he is the associated professor of Economics. He was previously detained during the Xinjiang riots last year.