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Sept. 26, 2014 -- Westchester County District Attorney Janet DiFiore announced that Michelle Sergio (DOB 10/15/74) of 53 Eagle Ridge Way, Nanuet, New York was sentenced today to an indeterminate term of 1 to 3 years in prison on the May 2014 guilty plea to the entire indictment that charged her with:

  • two counts of Vehicular Manslaughter in the Second Degree, class ā€œDā€ Felonies
  • two counts of Driving While Intoxicated, class ā€œAā€ Misdemeanors

relating to the death of John Mangialardi, a well-known local attorney.

On Sept. 3, 2013 at approximately 10:15 p.m., at the intersection of Route 9A and Route 134, in the Town of Ossining, the defendant, on the way to work at a social service agency in Ossining, struck the victim as he crossed Route 9A.

The victim was pronounced dead at the scene shortly thereafter by responding EMTs.

Sergio was found to have a blood alcohol level of .12 at the time of this incident.

Police initiated an accident reconstruction and the defendant was subsequently arrested.

Assistant District Attorney Timothy Ward, Chief of the Career Criminal Bureau prosecuted the case.


Michelle Sergio

Michelle Sergio