YAPHANK, N.Y. (CBSNewYork) — Suffolk County police have arrested the driver they believe struck and killed a pedestrian in Miller Place before fleeing last year.

After a nearly six-month investigation, police have charged Christopher Campbell, 35, of Sound Beach, with leaving the scene of an incident involving a fatality.

READ MORE: NYPD Officer Wilbert Mora Dies After Being Shot In Line Of Duty In Harlem: 'True Heroes Never Die'

At around 11:15 p.m. on Oct. 18, he allegedly hit Tracy Ann Mangino, 40, with a commercial, box-type truck and kept going.

Mangino was walking along North Country Road near Block Island Drive, just steps from her home after visiting a friend, when she was struck by the eastbound vehicle.

READ MORE: Overturning Of Mask Mandate In New York State Leads To Confusion On How To Proceed In School Districts

Tracy Ann Mangino and daughter (CBS 2)

Tracy Ann Mangino and daughter (CBS 2)

The mother of a teenage girl, Mangino was transported by ambulance to John T. Mather Memorial Hospital in Port Jefferson, where she succumbed to her injuries.

“Could you please turn yourself in so we could know why you just left her there on the side of the road?” Kathleen Mangino, the victim’s mother, said to CBS2’s Jennifer McLogan in October.

MORE NEWS: Sources: Man Shot In ER Waiting Area At Jacobi Medical Center

Campbell is scheduled to be arraigned Tuesday at First District Court in Central Islip.