A newly unsealed document sheds light on the police investigation into the alleged death of 5-year-old Harmony Montgomery, the New Hampshire girl whose disappearance in 2019 made national headlines.

The 48-page probable cause statement, which was unsealed Tuesday by a judge after a motion by WMUR-TV in Manchester, New Hampshire, outlines for the first time the disturbing events that Manchester police investigators say led up the girls beating death by her father, Adam Montgomery, on Dec. 7, 2019, as well as how he allegedly hid her body.

Montgomery was found guilty in June of a gun charge, receiving stolen property and theft in an unrelated case. He has pleaded not guilty to second-degree murder, falsifying evidence, abuse of a corpse and witness tampering in connection with his daughters death and has yet to go on trial on those charges. The girls body has never been found.

Montgomerys attorney did not respond to HuffPosts request for a comment on Tuesday.

According to the court documents, Montgomery took Harmony in July 2018 after her mother, Crystal Sorey, lost custody because of a substance abuse issue. In the following year, the Manchester Police Department would receive at least 29 calls from neighbors who were concerned about the welfare of Harmony and her siblings, WMUR reported.