During the investigation LAPD found video of Elisa in one of the elevators. She was acting very abnormal. She was peeking her head in and out of the elevator, hiding where no one could see her if they were to walk by, pressing a lot of buttons at once, dancing in the hallway, then when she gets out the elevator the door opened and closed multiple times.
Russel, Carissa. Elisa Lam Elevator Surveillance Video- Hotel Cecil. Youtube. 28 Sept. 2017, Elisa Lam Elevator Surveillance Video - Hotel Cecil