Updated at 8:40 a.m. ET
Chinese authorities are razing one of the Beijing studios of dissident artist Ai Weiwei. He said that demolition crews showed up without advance warning, and have begun the process of tearing down the studio.
Ai has been a longtime critic of the government, and on Saturday, he began posting videos to his Instagram feed of the studio's destruction. "Farewell," Ai wrote. "They started to demolish my studio 'Zuoyuo' in Beijing with no precaution."