A rollover accident Tuesday on Interstate 95 in Portsmouth, New Hampshire, killed a Harpswell, Maine, man and injured his passenger, from Vassalboro, Maine, according to New Hampshire State Police.

The accident occurred about 3:19 p.m. in the highway’s northbound lanes when a 2003 Mitsubishi Montero driven by Rodney Hoverson, 54, of Harpswell, went off the left side of the highway near Exit 3, then drove back onto the pavement, police said; but as the driver tried to regain control of the vehicle, it rolled over several times. The car again went off the left side of the road and into the grass median, stopping near the southbound breakdown lane. Hoverson was not wearing a seat belt and was ejected from the vehicle as it rolled over, police said.

Hoverson was taken to Portsmouth Regional Hospital, where he died from his injuries, according to police.

Police identified the passenger as Darren Carlton, 46, of Vassalboro, who was taken to the same hospital with multiple injuries that were not considered life-threatening. Carlton was wearing his seat belt, police said.

The left two northbound travel lanes of Interstate 95, as well as the left southbound travel lane of Interstate 95 were closed for about two hours as troopers conducted their investigation. Speed and impairment appear to be possible contributing factors in this accident, but all aspects of the crash are being investigated.

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