A 20-year-old Boston man is dead after he crashed his sedan into a tree on Rt. 24 in Randolph Wednesday afternoon.

At approximately 3:50 p.m. troopers assigned to the Milton barracks responded to reports of a northbound vehicle that left the roadway right before Exit 21. According to a preliminary investigation, a 2008 Infiniti G35 changed from the left to the middle lane at a high rate of speed before the crash. The Infiniti lost control, rolled, and crashed into a tree. The driver, who was the sole occupant, was pronounced dead at the scene, Massachusetts State Police said in a media release.

The man's name has not been released.

The crash remains under investigation by Troop H of the Massachusetts State Police with assistance from the State Police Collision Analysis, Reconstruction Section and the State Police Crime Scene Services Section, and the H Troop Detective Unit. Troopers were assisted by MassDOT, Randolph Fire and EMS, and the Office of the Chief Medical Examiner.

The right travel lane was closed for more than three hours while the investigation was being conducted.

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