A Monongahela man charged with homicide in the killing of his wife in March of 2022 pleaded guilty on Friday. Dennis Vaccaro, 65 pleaded guilty to third degree homicide in the killing of his 47 year old wife Mecca. The two were witnessed arguing outside and inside their home. When inside the home, Vaccarro shot his wife twice. The witness said that when he arrived in the home, Mecca said he shot me! Dennis Vaccaro said I shot her twice. A self defense argument did not work and a negotiated plea ended the case. Vacarro will now spend the next nine to twenty years in state prison.