Photo: NDResponse

CAVELIER, N.D. (KFGO) – The search has ended for a missing 18-year-old man in northeastern North Dakota.

The Pembina County Sheriff’s Office says his body was found Friday afternoon in the Tongue River, not far from his home. The man was autistic and there was concern he may not survive Thursday night in the cold. He was wearing sweatpants and a hoodie when he left his home at about 10 p.m.

A crime is not suspected in his death.

A silver alert was issued early Friday morning after it was reported Neil David Kiemele went missing.