The investigation began on July 28, 2025, after a report was filed by church officials in Coarsegold. Detectives learned that Kemper, who served as a pastor at the church, had been engaging in inappropriate communication and sexual conduct with the juvenile victim.
Detective Michaela Plummer of the Investigations Unit led the case and coordinated follow-up. The investigation revealed the victim was in a sexual relationship with Kemper that occurred between March and July 2025, involving multiple incidents at the church, her home, and inside the suspect’s vehicle.
Digital evidence revealed extensive explicit messaging, photos, and videos exchanged between Kemper and the victim.
Kemper was contacted by investigators and declined to provide a statement, having retained legal counsel. A warrant was subsequently sought for his arrest. On 10/27/25, Kemper was arrested at his home in Coarsegold on 7 felony charges.
The investigation also identified extensive digital grooming behaviors and confirmed Kemper’s use of a VoIP phone number and social media accounts to conceal communication with the victim.
The Madera County Sheriff’s Office commends the courage of the victim and her family for coming forward and cooperating with law enforcement. The Sheriff’s Office remains steadfast in its mission to protect children from exploitation and to hold offenders accountable.
Based on the current evidence and circumstances of this investigation, it is possible that there are additional victims that have not yet come forward.
Anyone with additional information regarding this case or similar prior contact with Joshua David Kemper is encouraged to contact the Madera County Sheriff’s Office Investigations Unit at (559) 675-7770 or Detective Michaela Plummer at (559) 706-1276.
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