evidence: - Cassie Compton, an Arkansas girl who went missing in 2014 when she was 15 years old, was thought to be seen in aviral TikTok video. - Local police said in a Facebook post that they were working with state police and the FBI to investigate the lead. - Another girl came forward on Instagram claiming to be the person seen in the video. Police in Arkansas said they're looking into a viral TikTok video that many believe showed Cassie Compton, a girl who went missing in 2014 when she was 15 years old.