Torture Victim Describes Atrocities In Syrian Prison 

In the report, Amnesty International claims as many as 13,000 people were killed at the Saydnaya military prison — typically in mass hangings — from March 2011 until December 2015. The Syrian government has called Amnesty International’s report “completely untrue” and “baseless.”
http://www.npr.org/2017/02/09/514326212/former-detainee-describes-atrocities-inside-syrian-prison