With nothing of evidentiary value found in the second home, the raid was halted when deputies searched a database of 911 calls and discovered the caller had previously made multiple false reports and had numerous other law enforcement contacts.

Two weeks before the raid, the caller, identified as William Warfe Jr., had been taken by deputies to a mental health crisis center and had dealt with law enforcement numerous times regarding baseless 911 calls, according to court documents.

The manager of the trailer park where Warfe lived spoke to deputies several days later, saying Warfe was “terrorizing the trailer park,” court documents show.

The deputy who responded made a note in her report and told the oncoming shift she was working with the Community Response Center to try to get Warfe hospitalized. All of the department’s encounters with Warfe were entered into the department database.

At trial, the Larson’s were able to prove that general practice for the Sheriff’s Department is to check the database of 911 callers’ previous calls on the way to a potential crime scene and that despite the fact that at least two sergeants rode together to the Larson home, no check was made, according to the appellate court memo.