New City, NY – Rockland County District Attorney Thomas E. Walsh II announced the sentencing of two individuals in connection with the brutal murder of 85-year-old Constantinos Mastakouris.
Constantinos Doonan, a/k/a “Dino” (DOB 7/17/92), and Jo-Ann Haughey (DOB 1/15/96), both of New City, were sentenced for their roles in the killing of Mastakouris, who was Doonan’s grandfather. Doonan received a sentence of 20 years to life in state prison for second-degree murder, a class “A” felony. Haughey was sentenced to 15 years for first-degree manslaughter, a class “B” felony.
The crime occurred between January 29 and 30, 2023, at Mastakouris’ home at 45 Ruth Drive in New City. According to authorities, Doonan and Haughey strangled Mastakouris to death. After the murder, they concealed his body in a crawl space in the basement, wrapping it in a tablecloth, kiddie pool, and shower curtain. The pair then stole the victim’s belongings, including his car, jewelry, and credit card.
“The killing of one’s grandfather is evil and an unimaginable act,” said District Attorney Walsh. “The actions of the defendants have left their family completely shattered by this horrific act. The defendants are being held fully accountable for their crimes and will serve lengthy prison terms.”
The case was investigated by the Clarkstown Police Department. Deputy Chief Assistant District Attorney Dominic Crispino and Supervising Assistant District Attorney Sharleen Bailon prosecuted the case.
Doonan and Haughey were sentenced on December 3, 2024.