6-year-old girl vanishes from Arizona home

Tucson police are now searching for 6-year-old Isabel Mercedes Celis, who officials say went missing from her home on the city's east side. Isabel was last seen late April 20, 2012, and discovered to be missing at about 8 a.m. the next day. Isabel is described as just under four feet tall, weighing 44 pounds, with brown hair and hazel eyes. She is seen here in this undated personal photo. Anyone with information about Isabel's disappearance or whereabouts is urged to call the Tucson Police Department at 520-791-4444 or 520-88-CRIME.

This undated photo provided by the Tucson Police Department shows Isabel Mercedes Celis. Anyone with information about her disappearance or whereabouts is urged to call the Tucson Police Department at 520-791-4444 or 520-88-CRIME.

An alley path behind the street where a 6-year-old Tucson girl went missing from her home is cut off with police tape in Tucson, Ariz., on Sunday, April 22, 2012. Police cordoned off a neighborhood block where Isabel Mercedes Celis went missing from her home during the night, as authorities fanned out Sunday over a wide area looking for clues to the possible kidnapping.

Tucson police are searching for 6-year-old Isabel Mercedes Celis, who officials say went missing from her home on the city's east side. Anyone with information about Isabel's disappearance or whereabouts is urged to call the Tucson Police Department at 520-791-4444 or 520-88-CRIME.

This undated personal photo shows Isabel Mercedes Celis. Anyone with information about her disappearance or whereabouts is urged to call the Tucson Police Department at 520-791-4444 or 520-88-CRIME.