According to information received from the Observatory for the Protection of Human Rights Defenders, Ding Zilin, Zhang Xianling and Huang Jinping, all spokespeople for families of victims of the violent crackdown against protesters in Beijing on 4 June 1989, were arrested by police on 28 March 2004. The arrests are allegedly in connection with a video CD which includes testimonies from the three women about relatives they lost in Tiananmen Square, and which is due to be shown to the Working Group on Enforced or Involuntary Disappearances at the UN Commission on Human Rights.
On 28 March 2004, Zhang Xianling was allegedly apprehended in her home by two police officers who reportedly presented a warrant stating that she was being detained under Article 50 of China's National Security Law. It is alleged that the police told Zhang Xianling's husband that the Tiananmen Mothers Campaign and the Tiananmen Mothers were reactionary organizations through which entities inside and outside China were conspiring to harm national security and to incite subversion of state power. 
