In 1997, a police roundup and the execution of 30 suspected separatists during Ramadan led to large demonstrations in February 1997 which resulted in the Ghulja incident, a People's Liberation Army (PLA) crackdown which resulted in at least nine deaths.[58] The Ürümqi bus bombings later that month killed nine people and injured 68 and the responsibility for them was claimed by Uyghur exile groups.[59] In March 1997, a bus bomb killed two people with responsibility claimed by Uyghur separatists and the Turkey-based Organisation for East Turkistan Freedom.[60]