Prosecuting Attorney

Chip McConnville

Assistant Prosecuting Attorneys

David Merrell

Vince J. Villio

Mike Miller (Child Services)

Victim Advocate

Diana L. Oswalt, Director

Communications Manager/Legal Assistant

Emily Morrison

Legal Assistants

Tonya V. Durbin

Liz Ewers

Janine Hebenthal

Office Location

117 East High Street, Suite 234
Mount Vernon, Ohio 43050
Phone:  740-393-6720
Fax:  740-397-7792

Office Hours

Monday thru Friday
8:00am to 4:00pm

Closed weekends and holidays



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My primary responsibility as Knox County Prosecutor is to bring to justice those criminals who victimize the citizens of Knox County by committing felony crimes such as murder, rape, robbery, or burglary. It is my duty, when in possession of sufficient evidence to warrant the belief that a person is guilty and can be convicted of a felony, to prosecute the appropriate criminal proceedings on behalf of the people of Knox County.

Before a felony case can be effectively prosecuted, it must first be investigated by a governmental agency, bureau, office or department having jurisdiction over the alleged crime or crimes.

My Office works most often with the following investigative authorities:

Knox County Sheriff’s Office

Mount Vernon Police Department

Fredericktown Police Department

Danville Police Department

Knox County Children Services

Ohio State Highway Patrol

We work closely with other members of the Knox County law enforcement community with the goal of removing dangerous individuals from our streets.

After a case is accepted for felony prosecution, any victim or witness having questions about, or information concerning, the case is encouraged to contact my Victim Assistance Office at:  740-397-3404

Crimes that are not felonies are called misdemeanors. The law provides a lesser punishment for misdemeanors than for felonies. Examples of misdemeanors are petty theft, driving under suspension and disorderly conduct. The Mount Vernon City Law Director prosecutes misdemeanors committed by adults in Knox County.

The City Law Director’s telephone number is:  740-393-9562

Sometimes it is not clear whether a crime is a felony or a misdemeanor. Any interested person having questions about whether a crime is a felony or a misdemeanor should not hesitate to contact my Office.

Attorneys and support staff in the Felony Division of the Knox County Prosecutor’s Office may be contacted at:

The Office of the Knox County Prosecuting Attorney
117 East High Street, Suite 234
Mount Vernon, Ohio 43050

Phone:  740-393-6720
Fax:  740-397-7792
E-mail:  This email address is being protected from spambots. You need JavaScript enabled to view it.

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