HARVARD, MASS. (WHDH) - Officials closed part of Interstate 495 in Harvard early Tuesday morning following a deadly crash.

Officers responding to I-495 south just after exit 28 found a truck rolled over on its roof around 12:15 a.m.

The driver of the vehicle was pronounced dead at the scene, police said.

Authorities shut down both lanes of travel as they investigated.

Police determined that the truck was traveling south in the left lane when it drifted off the roadway to its left, struck a median guardrail and rolled over.

Troopers are investigating speeding as a possible factor.

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