Patrick C. Prendergast, 27, of Marengo.

A Marengo was sentenced to four years in prison for pinning down his girlfriend, grabbing her by the neck — which caused her to pass out, and then striking her in the face, prosecutors said.

Patrick C. Prendergast, 27, of Marengo, was found guilty on Friday of domestic battery causing bodily harm, a Class 4 felony, following a negotiated plea deal in front of McHenry County Judge Michael Coppedge.

The Marengo Police Department responded on January 17 to the residence of Brittney Pietrarosso in Marengo, according to the McHenry County State’s Attorney’s Office.

The woman told officers that she had fled her residence after being attacked by her boyfriend, Patrick Prendergast.

The woman said Prendergast had tackled her and pinned her to the ground. He then grabbed her around the neck, which caused her to momentarily black out, and struck her in the face, prosecutors said.

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Officers located Prendergast at the scene and he resisted their efforts to take him into custody.

Prendergast was sentenced to four years in the Illinois Department of Corrections. He will also have to pay $824 in court fines and fees, records show.

As a result of Prendergast taking the plea deal, prosecutors dismissed additional charges of aggravated domestic battery, domestic battery making physical contact and resisting a peace officer.

The case was investigated by members of the Marengo Police Department and prosecuted by Robert Ladd of the McHenry County State’s Attorney’s Office.