SUMMIT TWP — An Ohio teenager is accused of cutting his stepfather's throat with a razor knife during a weekend domestic dispute in the township.

Donald J. Zuppo Jr., 18, of Youngstown reportedly believed he had killed the alleged victim after fleeing the bloody crime scene. State police later arrested him in Saxonburg.

District Judge Sue Haggerty arraigned him on charges of aggravated assault, simple assault and reckless endangerment.

Zuppo, who is already under indictment in Ohio for illegally having a gun, is in the Butler County Prison on $20,000 bail.

Police said the defendant about 7:15 p.m. Friday attacked 46-year-old Kevin Lee Walker with a utility knife at Walker's home in the 300 block of Carbon Center Road where he lives with his wife, Zuppo's mother.

The attack left Walker hospitalized in Pittsburgh with wounds to the neck and chest. His condition was not known this morning.

Troopers found the injured man, bleeding profusely, and his wife, Kelly Walker, after being called to the couple's home.

Walker told police that he and Zuppo got into a fight during which the teen put him in a headlock and cut his neck with a knife, according to court documents.

Kelly Walker acknowledged that before the two men fought, she and her husband had gotten into a “physical altercation,” a police affidavit said.

She claimed she did not see her son cut Walker with the knife. However, after the fight, she saw him drive away with her other son and her nephew.

Troopers said they found evidence of a violent struggle in the house, including blood in the master bedroom and bathroom and on the living room couch.

Police eventually spoke to Kelly Walker's other son, Robert Ortz, who told investigators that he was inside his car when Zuppo came out of the house. Ortz recounted that Zuppo was carrying a red utility knife

“Ortz advised that upon getting into the vehicle,” documents said, “the defendant told him that he cut the victim and he thought he killed him.”

He told police that he saw blood on Zuppo's hands.

Ortz said he and Brian Booth, Kelly Walker's nephew, who also was in the car, “talked the defendant into throwing the knife out the window,” documents said.

Troopers later searched for and found the knife, which still had blood on it, on Route 422 near the Mitchell Hill exit.

Booth corroborated Ortz's account, police said.

Police arrested Zuppo at Ortz's home in Saxonburg.

Zuppo allegedly confessed to cutting Walker several times with the utility knife. He claimed he regularly carries it for “street fighting,” documents said.

He said he pulled out the knife after Walker had struck him in the head.

“The defendant advised that he knew he had cut the victim one good time in the throat area,” the police affidavit said.

When police arrested Zuppo, he was wanted in Ohio on a warrant for failing to appear for arraignment in a criminal case there.

A Mahoning County grand jury in that case indicted him Jan. 31 for illegal gun possession, court records showed, after Youngstown police charged him with firing a firearm in the city.