On 19 May 2014, four special procedures mandate holders raised allegations of acts of intimidation and reprisal against Le Cong Cau, head of the Buddhist Youth Movement. Mr Cau had participated by means of an audio message at a side event called "Banned civil society voices" on 4 February 2014, before the universal periodic review of Viet Nam had taken place. Mr. Cau had been under surveillance since March 2013 and had been detained on 1 January 2014 on suspicion of carrying terrorist materials as he was boarding a plane for Ho Chi Minh City and placed under house arrest. Although he had reportedly been told orally that he could travel freely within the country, Mr. Cau was rearrested on 16 February 2014 and taken to Truong An district police station, where he was interrogated about his audio message at the side event. On 14 April 2014, Mr. Cau was informed by an official of the Thua Thien-Hue police that he would remain under house arrest for the duration of the investigation of his case. At the time of finalization of the present report, no reply had been received from the Government.