Hundreds of police documents in the Isabel Celis case have just been released, giving us a new look inside the investigation. Isabel Celis disappeared from her Tucson, Arizona, home overnight April 20. She was 6 years old at the time. 

Isabel’s dad, Sergio, says the family came home late on the April 20 and he fell asleep on the couch after putting Isabel to sleep in her bedroom. Isabel’s mom left for work at 7 a.m., but did not check on Isabel. Later that morning, Sergio discovered that Isabel was missing and called 911.

Jane Velez-Mitchell and investigative reporter and HLN contributor Jon Leiberman comb through the newly released police documents to see what new clues they reveal.

For more on the search for Isabel watch Jane Velez-Mitchell weeknights at 7 p.m. ET on HLN.