03/13/2026
WASHINGTON COUNTY
Prosecuting Attorney's Office
FOR IMMEDIATE RELEASE
Friday, March 13, 2026
Potosi Correctional Center Inmate Sentenced to 15 Years in the Missouri Department of Corrections for Voluntary Manslaughter
Washington County, MO - On Monday, March 2, 2026, Offender Isreal Leggette was sentenced in the 2023 murder of Joshua Cosby at the Potosi Correctional Center. After consultation with the victim's family, a plea offer for Voluntary Manslaughter, a Class B Felony, was extended, and Leggette entered a plea of guilty. Sentencing was argued in front of the Honorable Judge Brice Sechrest.
During sentencing, the victim's mother spoke of her faith in the Lord and of her forgiveness for Leggette and the role that he played in the death of her son. The victim's father struggled to understand just why Leggette would have brutalized his son in such a way. Joshua was deeply loved by his family and had a vision for his future. In the wake of her son's death, Mrs. Cosby started the nonprofit program "IKINJ" (I Know I Need Jesus). She hopes that Offender Leggette may come to know Jesus.
First Assistant Prosecuting Attorney Brad Van Zee who argued sentencing in this case expressed how blessed he was to have met the Cosby family and marveled over the grace they displayed in forgiving Leggette. Prosecutor Van Zee described Offender Leggette as a "feral animal" and emphasized the importance of keeping him separate from society as a matter of public safety.
Judge Brice Sechrest sentenced Leggette to 15 years in the Missouri Department of Corrections to run consecutively with the current sentence that he is obligated to serve. Prosecuting Attorney John I. Jones and Assistant Prosecuting Attorney Brad Van Zee would like to commend the victim's family for their mercy in this matter and Investigator Cindy House of the Office of Professional Standards in the Missouri Department of Corrections for her diligent work investigating this case.
The Washington County Prosecuting Attorney's Office remains dedicated to seeking justice and standing for those who have been victimized in our community.