TUCSON, Ariz. (AP) -- Tucson police are searching for more surveillance footage from the night a 6-year-old girl went missing from her home. A Tucson Police Department spokeswoman said Monday that video of potential eyewitnesses walking near Isabel Mercedes Celis' house the night she disappeared is likely from the wrong night. Sgt. Maria Hawke says the two males and three females in the publicly released footage have identified themselves and told authorities the video wasn't from the night Isabel disappeared. Investigators are working with the business that provided the video to get footage from the night in question. Isabel's parents say they last saw her in her bedroom the night of April 20 and discovered she was missing the next morning. Police say a window was open with the screen pushed aside.