Six members of the Prosper Police Department have been demoted following a complex internal investigation that began with allegations of an inappropriate relationship between a sergeant and a detective. The disciplinary actions conclude a months-long dispute that involved private surveillance by fellow officers and a reversal of termination recommendations by town leadership.
The issue originated with rumors regarding a relationship between Sgt. Larry Windon and Det. Lauren Harper. Three other detectives, Joseph Buttery, Michael Zachary, and Cody Wilson, stated that the couple’s conduct negatively impacted department morale and productivity. On December 30, 2025, these three men initiated their own inquiry into the pair.
According to video interviews obtained by CBS News, the detectives used the department’s internal surveillance cameras to track Windon’s movements. They observed him placing his phone in a bathroom, leaving the station, and returning within an hour, a pattern that coincided with Harper’s arrival. The men reviewed 30 days of footage and identified 13 specific incidents.
They also utilized the department’s Flock license plate reader system to track the couple’s vehicles, noting meetings in various locations including a nearby hotel. Surveillance video from that hotel showed the two entering and exiting a room on consecutive days.
The detectives reported their findings to Sgt. Seanna Arredondo on December 30. Arredondo informed Internal Affairs, which alerted Assistant Chief Tom Davis. At the time, Police Chief Doug Kowalski was aware of the investigation by January 2, 2026.
By January 5, both Harper and Windon were placed on administrative leave. During separate interviews with Internal Affairs Lt. Bryan Golden, the pair admitted the relationship had begun nearly a year prior.
The detectives alleged that the relationship violated policies regarding supervisor-subordinate dynamics, misuse of town equipment, and potential criminal acts such as public lewdness. Kowalski stated in a written account that he believed the couple’s actions crossed serious professional and legal lines. He reported that he, the town manager, and the HR director agreed that both officers should be terminated.
