Tasnim said that police watched surveillance footage of Shahkarami entering an adjacent building and that it remains unclear how she died.The semi-official Fars News agency on Wednesday published CCTV footage that it claimed showed the last moments of Shahkarami’s life.The video, which the agency said it obtained from police and judicial authorities, shows a person walk into an alley and enter a home, pulling down their face mask as they walk through the door.“This is the last video of Nika Shahkarami, 7 hours before her body was discovered,” Fars News said, claiming that it showed the teenager going into a half-finished home near her aunt’s alley while talking on her mobile phone.President Joe Biden, who has moved quickly to throw his support behind the demonstrators, issued an intentionally vague statement Monday promising further costs “on perpetrators of violence against peaceful protestors.” A source told CNN those costs are expected to be in the form of additional sanctions this week, with more action to potentially follow."