Tucson police are on day 5 of searching for missing first-grader Isabel Celis.
Tucson Police Chief Roberto Villaseñor said the case of the missing 6-year-old is the "highest profile case in the nation," for the National Center for Missing & Exploited Children.
The Tucson Police Department will receive help from a team of behavioral analysts from the FBI and the Pima County Attorney's Office.
The special team from the FBI searched the family home near Broadway and Craycroft on Tuesday night.
After several days of searching a nearby landfill, police scaled back Tuesday night. Going from more than 200 officers looking to about 20 on the streets. Investigators say they will now focus on the more than 200 leads they have received.
Isabel's family says she was put to bed around 11 p.m. Friday night, and when her father went to wake her up around 8 a.m. Saturday morning she was missing.
Investigators are now allowing Isabel's family back in the home after they had been kept away for most of Monday.
During a press conference on Monday, police officials said late Sunday FBI dogs alerted officers during a search at the house.
“We’re not talking about what the dogs found other than the fact that they were out there, the dogs did alert on some issues that obviously causes us to want to investigate, to look into that,” said Villaseñor.
Isabel's family issued a statement through the Tucson Police Department, saying they love her and will never give up looking for her.
Monday evening Lt. Fabian Pacheco read the statement, which said, “We appreciate everyone’s interest in finding our daughter, Isabel, and thank all the volunteers who have come out to search for her. We are cooperating fully with authorities and are focused only on her safe return. We appreciate all your energy and efforts and continue to need the community’s help. Please call the Tucson Police Department if you have any information, we love Isabel and will never give up finding her. Thank you for all your support.”
Investigators have not named suspects in the case but Villaseñor said detectives are following up on hundreds of leads from the public. Police have interviewed 17 sex offenders in the neighborhood.
Isabel is described as just under 4-feet-tall and weighing 44 pounds, with brown hair and hazel eyes.
A $6,000 reward is being offered by 88-CRIME for anyone with information leading to the location of the 6-year-old, Villaseñor says.