Sednaya Prison (Arabic: سجن صيدنايا‎ Sajn Ṣaydnāyā) is a military prison near Damascus in Syria operated by the Syrian government. The prison has been used to hold thousands of prisoners, both civilian detainees and anti-government rebels. The Syrian Observatory for Human Rights (SOHR) estimates that 30,000 detainees have perished in Sednaya from torture, ill-treatment and mass executions since the outbreak of the Syrian Civil War, while Amnesty International estimated in February 2017 "that between 5,000 and 13,000 people were extrajudicially executed at Saydnaya between September 2011 and December 2015."