A 20-year-old East Moriches man was arraigned Sunday in Central Islip on charges that he raped a woman in her Stony Brook home, authorities said.

Patrick O'Sullivan, of 11 Beverly Lane, is charged with first-degree rape, burglary, kidnapping and criminal use of a firearm. He was arraigned at First District Court in Central Islip, where he was remanded to the Suffolk County Jail.

Staff in the records department at the jail did not know whether he entered a plea.

On Saturday, Sixth Precinct Det. Lt. William Burke said: "Obviously anybody who was concerned about him will be relieved now, but we didn't think there was a huge threat to the general public. It was not random. He had some knowledge of the family that lived at that home."

O'Sullivan allegedly wore a mask and carried a loaded rifle as he entered the home through an unlocked door about 11 p.m. on Nov. 20.

Once in the house, he fired two shots and restrained the woman, binding her hands behind her back with duct tape before raping her, police said.

advertisement | advertise on newsday

O'Sullivan had no prior arrests and was not known to the victim, police said.

Burke declined to say how the suspect was identified.