(CNN) -- FBI K-9 dogs hit on items around the southern Arizona home of a missing 6-year-old girl on Monday, prompting authorities to take over the house, a police chief said. Tucson Police Chief Roberto Villasenor said Monday night that the "specialized K-9s (were) flown in" to help in the case of young Isabel Mercedes Celis, who was reported missing on Saturday morning. The dogs "did alert on some things that caused us to go back" to the house, said the chief. While they've described her disappearance as suspicious, local authorities have not identified any suspects in Isabel's case nor have they indicated what they believe may have happened to her.
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Isabel Mercedes Celis, 6, was reported missing Saturday in Tucson, Arizona
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Police call her disappearance suspicious, but no suspects have been named
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FBI K-9 dogs raise alarm, leading police to get a warrant to occupy the girl's house
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A neighbor says community members are "totally distraught" and "terrorized"
One street away from one of Tucson's busiest thoroughfares, the @placeholder' home is in a neighborhood of largely middle-class, single-family residences.