Video showed apparent smoke from tear gas near a bridge where mourners had gathered near the village of Veysian. Iranian authorities claimed Shahkarami’s body was found at the back of a courtyard on the morning of September 21. But dozens of videos and eyewitness accounts obtained exclusively by CNN indicate that Shahkarami appears to have been chased and detained by Iranian security forces that night. One key eyewitness, Ladan, told CNN she saw Shahkarami being taken into custody at the protest by “several large-bodied plainclothes security officers” who bundled her into a car. ISIS has claimed responsibility for the attack, but Iran’s leaders have conflated the attack with anti-government protesters.