From left, Mount Vernon police Detectives Nicholas Stella, Stanley Rice and Nicholas Mastrogiorgio investigate at 22 Grove St. in Mount Vernon on Tuesday, the day after Denisha McDuffy, 30, was found stabbed there.
MOUNT VERNON — Detectives have identified a woman who was brutally stabbed to death and a homeless woman whose body was found in a car under suspicious circumstances.
The stabbing of Denisha McDuffy, 30, in her boyfriend’s 22 Grove St. apartment and the death of Maryanne Bibbo, 41, who was found in the car at 149 S. Eleventh Ave., are not connected, said Detective Lt. Vincent Manzione. Both women were found dead on Monday.
McDuffy was found with several stab wounds in her boyfriend’s third-floor apartment in the city’s southwest section.
Manzione said McDuffy’s boyfriend, who is in his 20s, is not a suspect. McDuffy has lived “on and off with” him at 22 Grove St., police said.
Detectives kept police tape around the house Tuesday as members of the Westchester County crime scene unit went through the third-floor apartment looking for clues to the ninth homicide of the year in the city.
Police were called to the third-floor apartment by a second-floor neighbor who heard yelling and a large commotion at 11:42 a.m. Monday.
When police arrived, McDuffy was dead in the bedroom. Her boyfriend was not at home at the time, but was later questioned by detectives.
Police have strong leads in the case, and “several people of interest we are talking to,” Manzione said. “Right now we have a couple of things we are investigating and testing (their) validity.”
There are numerous surveillance cameras on commercial buildings directly across the street from the three-story multifamily house where McDuffy was slain.
Detectives said the victim’s mother and brother were “shattered” by news of her death.
Meanwhile, at 149 S. Eleventh Ave., detectives were awaiting autopsy results to determine how Bibbo died.
Bibbo was a homeless woman who had been estranged from her 53-year-old husband, a Mount Vernon resident, for many years, police said.
Bibbo’s body was found at 1:31 p.m. Monday in an abandoned car in the backyard of a three-story, boarded-up multifamily house.
A man passing through the backyard spotted the body in the passenger side seat of the car and called the police.
The woman was dead when police arrived. She had been dead for less than a day, police said.
“There were no obvious signs of trauma,” Manzione said. “The medical examiner is going to have to tell us the cause of death. We are treating it as a crime scene.”
The city has had more homicides this year than any other community in Westchester County.