He was arrested on 16 February 2012, when plain clothes Air Force Intelligence agents raided SCM’s office in Damascus and arrested all present staff members. He had been held in incommunicado detention for several months. In November 2012, he was brought to 'Adra prison, in the outskirts of Damascus, where he received a first visit by his relatives.
On 5 February 2013, he was charged before an investigating judge of the Anti-Terrorism Court who decided to maintain him in detention. The written indictment dated 27 February 2013 explicitly refers to his work to promote and protect human rights – actions which are held against him as part of an attempt to promote terrorist acts and to “stir the internal situation in Syria and so provoke international organizations to condemn Syria in international forums”.
On 24 March 2014, the General Prosecutor of the Anti-Terrorism Court of Damascus presented charges against Hussein Ghrer with “publicizing terrorist acts” pursuant Article 8 of the 2012 Anti-Terrorism Law.
On 9 June 2014, the government announced an amnesty, including for the charges Hussein Ghrer faces. He has not been freed, however.
He has finally been released on 17 July 2015, but the charges against him have not been dropped.
On 31 August 2015, the Syrian Anti-Terrorism Court acquitted Hussein Ghrer appliying the 2014 amnesty to his case.