Parents Make Emotional Plea for Return of Missing 6-Year-Old Girl
04/26/2012 AT 02:45 PM EDT
"Please, please – to the person or persons who have Isa, tell us your demands," her father, Sergio Celis, said Wednesday. "Tell us what you want. We will do anything for her."
In what police are calling a possible abduction, the first-grader was last seen before going to bed Friday night in her home in Tucson, Ariz. The next morning, she was not in her room, her window was open and the screen was knocked out, her father has told police.
Police Chief Roberto Villaseñor says authorities have identified no suspects and have not received a ransom note. Police continue to follow tips, but the number of officers assigned to the search has been reduced.
"It doesn't mean we've abandoned the search," he says. "We have just scaled back some of our personnel. We have accomplished the majority of the search of the sites we wanted to visit. We are now concentrating our search on maybe some focal points where we are hoping we'll have a little bit more success."