BUXTON — River Road was reopened to traffic by 10 a.m. this morning after a single motor vehicle crashed into a tree.

The accident was reported at 6:30 a.m. and crews responded. Arriving at the scene, emergency crews learned two people had been ejected from the vehicle, while two remained pinned inside, Buxton Police Chief Michael Grovo said.

According to a press release, it appears the vehicle was traveling south at a high rate of speed on River Road and careened off the road near the intersection of Back Nippen Road.

Due to the nature of the injuries, Life Flight helicopters were flown in to transport two of the people involved to Maine Medical Center, Grovo said. The other two were transported by ambulance also to Maine Medical Center, he added.

At this time, Grovo said all four involved are still alive. He said the department is not releasing their names, because juveniles were involved and want to insure all family has been notified.

The Buxton Police are investigating the accident and Maine State Police are working to reconstruct the accident. At this time, it is believed that speed and alcohol were a factor in the accident, Grovo said.