[20] Harmony's mother, Crystal Sorey, became concerned when Adam didn't bring her to visit for Thanksgiving.
In December 2021, the Manchester Police Department held a press conference about the case while cooperating with New Hampshire authorities.
On August 11, 2022, Manchester Police Chief Allen Aldenberg and New Hampshire Attorney General John Formella stated they believed that Montgomery was dead and that her father murdered her.
[22] Adam Montgomery was charged with second-degree murder, and the trial began on February 8, 2024 in the Superior Court in Hillsborough County.
Prosecutor Christopher Knowles took the case while Montgomery was represented by Caroline Smith and James Brooks.
[23] Kayla Montgomery, meanwhile, became a state witness who testified against her now ex-husband Adam, who she said was physically and emotionally abusive during their marriage.
On February 22, 2024, Adam Montgomery was found guilty of second-degree murder and falsifying physical evidence by the jury.