A 22-year-old Massapequa woman was indicted Wednesday on a murder charge in connection with the fatal stabbing of Robert Carragher III as he slept.

Kristin Sculley is accused of "plunging a switchblade" into Carragher's neck after he fell asleep in his basement bedroom while the two were watching television, according to Nassau County District Attorney Anne Donnelly.

Prosecutors allege that after Carragher fell asleep, Sculley left the room, retrieved the knife from her purse in an adjacent area, and returned to carry out the attack. She had been staying overnight at the Beaumont Avenue home from May 31 to June 1, authorities said, and carried out what prosecutors described as a “brutal attack” in the middle of the night.

Nassau County Det. Lt. George Darienzo said at a press conference following the stabbing that they had a friendship and had known each other for years.

Prosecutors say Carragher woke up gravely wounded and went upstairs to his parent's room screaming that he had been stabbed. His parents rushed to him in a desperate attempt to stop the bleeding.

“He died in his father’s arms,” Darienzo previously said. "No family should ever have to bear witness to their son being killed in that manner."

Nassau County police responded to the scene around 1:30 a.m., and found him lying on the kitchen floor where he was pronounced deceased.

Officers later discovered Sculley in the basement laundry room with blood on her clothing. A knife believed to be the weapon was recovered at the scene.

Police previously said Sculley had been angry with Carragher before the attack.

She pleaded not guilty.