In August 2012 UN investigators released Publishing a report Reporting which stated Statement that it was likely that Syrian troops and Shabiha militia were responsible for the massacre Killing , concluding Coming_to_believe that : `` On the basis of available evidence , the commission has a reasonable basis to believe that the perpetrators of the deliberate killing Killing of civilians , at both the Abdulrazzak and Al-Sayed family locations , were aligned to the Government .