PORTSMOUTH, N.H. (WHDH) - Police are investigating a motor vehicle crash that left one person seriously injured and shut a major road in Portsmouth, New Hampshire on Saturday.

Officers responding to reports of a motor vehicle collision in the area of Sagamore Avenue and Little Harbor Road found one of the operators suffering from serious injuries, police said.

Investigators said that woman, who was driving a Honda Ruckus Scooter, appeared to have crossed the center median and sideswiped an oncoming vehicle. The woman was not wearing a helmet and suffered a serious head injury, police said.

The woman and the other operator were taken to Portsmouth Regional Hospital. The woman remains in serious condition, police said.

Sagamore Avenue was temporarily closed during the investigation.

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