CANTERBURY, N.H. (AP) — A dirt bike rider was killed and another one was seriously hurt when the two collided in a field on their family’s property, the New Hampshire Fish and Game Department said,

Witnesses said the victim, a 20-year-old man, and his 21-year-old riding partner were riding in opposite directions in Canterbury when they collided on Sunday. Two other family members rendered first aid and called 911.

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Both men were wearing protective gear, including helmets and eye protection. The victim died at the scene; the other rider was taken to the hospital with serious, life-threatening injuries, Fish and Game conservation officers said.

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The crash is still under investigation, but officers said it appears the cause was speed and inattention by both riders. Their names were not released.

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