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Michael Thunderhorse pleads guilty to stabbing in New Rochelle traffic

WHITE PLAINS, NY (September 20, 2022) – Michael Thunderhorse, 56, of Greenburgh, NY, pleaded guilty today before Judge Alexandra Murphy of Westchester County Criminal Court. He will be sentenced to four years in state prison and three years of supervised release on November 15, 2022.

Thunderhorse has two outstanding charges, one in Greenburgh, where he previously pled guilty to charges of domestic violence against his mother-in-law, wife and daughter, and a second in Yorktown for contempt.

Editor’s note: The ADA said in court Thunderhorse has cases in Arizona. There is an online report that Thunderhorse has been sentenced to 15 years in prison for aggravated assault with enhancements in Arizona. We have reached out to the local county sheriff to confirm this report and get details.

Recent criminal history of Michael Thunderhorse based on police reports and court records:


On January 16, 2022, Michael Thunderhorse was charged with criminal contempt in Yorktown Justice Court. The case remains open. His next appearance in Yorktown is scheduled for September 29, 2022.


At approximately 11pm on July 27, 2021, Greenburgh Police were called to a home with an address in White Plains regarding a domestic violence incident. Four people were involved in the incident: Michael Thunderhorse, his wife, his mother-in-law, and Michael Thunderhorse and his wife’s infant, their daughter.

The wife told GPD officers that she and Michael Thunderhorse had a verbal altercation around 3pm that day. The wife said that Michael Thunderhorse verbally abused her throughout the night and she explained that she left him alone.

The mother-in-law reported that Thunderhorse became increasingly violent towards her as the evening progressed. She said Thunderhorse pushed her into a car and then grabbed her by the throat. She stated that he put his hand around her neck and applied pressure, which made it difficult for her to breathe. The mother-in-law had visible abrasions on her neck.

The woman reported that she later went to her bedroom and Thunderhorse held the child. The mother-in-law stated that at this point Thunderhorse threw a phone charger at her and began pushing her out of the bedroom while holding the baby.

The mother-in-law said she saw Thunderhorse punch her daughter in the face several times with a closed fist and throw her to the ground.

The daughter later told police that she passed out during the altercation with Thunderhorse, but does not know how she lost consciousness.

The mother-in-law told police that Thunderhorse hit her in the face and head while trying to help her daughter while holding the child. She stated that Thunderhorse then left the house with the baby.

Thunderhorse held the child in his arms while physically attacking both women, hitting them multiple times. During the altercation, Thunderhorse caused physical injuries to his daughter’s head and face by holding her as he fought with his wife and mother-in-law.

The mother-in-law reported dizziness, a swollen cheek, pain in her jaw, difficulty opening her mouth and throbbing pain in the side of her head as a result of Thunderhorse’s beating.

Police noticed visible marks on the mother-in-law, including swelling on her nose, abrasions on her neck and arms, and a bruise on the back of her head. She also had visible marks, including redness on her face. The child had abrasions on his head and face.

The wife, mother-in-law and infant were all taken to GPD headquarters where they were examined by GPD EMS. They were then transported to Westchester Medical Center for further treatment.

GPD officers went back and checked the house. They found Thunderhorse in an upstairs room. He was arrested on charges of assault – 3rd, criminal obstruction of breathing or circulation, a misdemeanor charge of domestic violence and endangering the welfare of a child.

On February 23, 2022, Thunderhorse pleaded guilty before Judge Delores Scott Brathwaite in Greenburgh Municipal Court. The case was adjourned for sentencing on May 18, 2022.

New Rochelle:

The next day he pleaded guilty in Greenburgh to Michael Thunderhorse in New Rochelle.

On February 24, 2022, a woman was driving north on North Avenue in a black Honda after exiting a truck driving test being held on Anderson Street. She later told police that she believed she cut off someone else’s while driving near the station, where the two lanes merge into one lane. She said she was sitting at a traffic light when she was patted on the shoulder through the open driver’s window. She stated that a white or Hispanic man with white hair, a white beard and glasses then stabbed her in the stomach and returned to his vehicle. She could only describe the vehicle the man was driving as a cream or beige vehicle.

She later told police she was just trying to drive home when the pain became unbearable, so she stopped to phone someone, who called the police to get her help.

The victim drove from 309 North Avenue to Eastchester Road and Westwood Avenue a distance of 1.5 miles after being stabbed by Thunderhorse.

At approximately 3:35 p.m., New Rochelle police officers responded to reports of a stabbing near 309 North Avenue.

Shortly after, one person called the NRPD to report that they had received a call that a woman had been stabbed in the stomach while driving in New Rochelle.

NRPD headquarters told responding officers that the victim who was stabbed at 309 North Avenue was in a black Honda Civic that was now parked on the side of Eastchester Road at Westwood Avenue.

The victim, a woman in her 20s, was located.

Police observed a large laceration on the lower left side of her abdomen. The laceration appeared to be about 6 inches long. A police officer covered the wound and was able to stop the bleeding.

EMTs responded and transported the victim to Jacobi Hospital and said she had non-life-threatening injuries.

New Rochelle Police Detectives, working with the FBI Safe Streets Task Force and the Westchester County Attorney’s Office, developed leads that led to a suspect who lived in Greenburgh, NY.

On March 7, New Rochelle Detectives, the FBI, and Greenburgh PD located and arrested Michael Thunderhorse without incident after he left his home in the morning.

Thunderhorse was charged with 2nd degree assault, a violent D felony and 3rd degree criminal possession of weapons, a D felony.

On March 7, Thunderhorse unknowingly pleaded guilty to one charge of domestic violence in Greenburgh. On March 7, New Rochelle Judge Jared R. Rice set Thunderhorse bail at $50,000 in cash, $100,000 bail, or $250,000 partial debt. Judge Rice gave him a March 10 return date in New Rochelle City Court.

Thunderhorse posted bail and was released.

On March 8, Thunderhorse appeared virtually before Judge Brathwaite. Aware of the New Rochelle stabbing, she transferred Thunderhorse to the Westchester County Jail, where he has been held ever since.

On March 10, Thunderhorse made a virtual appearance in New Rochelle City Court from the Westchester County Jail, to the surprise of Judge Rice, giving Judge Rice first knowledge of the Greenburgh Town Court matter and Judge Brathwaite’s actions.

Thunderhorse’s sentencing in Greenburgh Municipal Court was adjourned several times. His next appearance in Greenburgh is scheduled for December 7, 2022.

A spokesman for the Westchester County District Attorney’s Office said after today’s sentencing that each case will be judged separately. Any additional sentences Thunderhorse receives will be served concurrently with the state incarceration.


Road Rage incident at New Rochelle train station ends with man stabbing woman on North Avenue

Thunderhorse pleaded guilty to domestic violence charges in Greenburgh; The next day he stabbed a woman in the abdomen in New Rochelle

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