UNITY — State police say a skateboarder has died in a crash on the Unity College campus in Maine.

Troopers say 23-year-old Christopher Garbinski of Unity and two roommates were on skateboards when they picked up too much speed on a descent and crashed while trying to make a turn early Wednesday. They say Garbinski died after hitting several birch trees; the other two sustained only minor injuries.

The three had been visiting friends on campus.

The state medical examiner’s office plans to determine the cause of death.

Troopers say first aid was administered to Garbinski by his roommates and by an ambulance crew from Unity. Garbinski, who was not wearing a helmet, lived in Unity but was not a student at the college.