Four people and a dog suffered carbon monoxide poisoning after spending the night in a camper van in Oy-Mittelberg, Bavaria. The incident occurred on Monday evening in the Unterschwarzenberg district, where a 70-year-old man lost consciousness. Kempten police said all four people were taken to hospital and the dog was treated at a local veterinary clinic. No permanent harm to the people is expected at present. Police are investigating the cause of the poisoning.