A man accused of forcing his girlfriend to marry him to prevent her from testifying against him pleaded guilty today to criminal charges. Gregory Hogg was immediately sentenced by a Warren County judge to three years in prison. The 41-year-old Hogg pleaded guilty to burglary, abduction, aggravated menacing and carrying a concealed weapon. The Carlisle man entered the pleas as his trial was about to start in Warren County Common Pleas Court. Hogg's girlfriend told police he threatened her and forced her to marry him last fall to keep her from testifying against him in another matter. But authorities say she still could have chosen to testify against him -- even though she was his wife. Prosecutors say Hogg has served prison terms for theft and violent offenses.