In this Feb. 4, 2013 photo, Ilham Tohti, an outspoken scholar of China's Turkic Uighur ethnic minority, pauses during an interview at his home in Beijing, China. Tohti was set to go on trial on separatism charges on Wednesday, Sept. 17, 2014.
Guzulnur, wife of detained Uighur scholar Ilham Tohti bids farewell to friends before leaving on a flight for Urumqi at the capital airport in Beijing, China, Sept. 15, 2014.
Guzulnur cries as she bids farewell to friends at the capital airport in Beijing, China, Sept. 15, 2014.
Policemen in riot gear guard a checkpoint on a road near a courthouse where ethnic Uighur academic Ilham Tohti's trial is taking place in Urumqi, Xinjiang Uighur Autonomous Region, Sept. 17, 2014.