A quiet evening gathering turned into a dangerous incident when an unexpected explosion shook a group of children in Austria. Authorities say the cause traces back decades.

The children, aged 10 to 14, were taken to a hospital for treatment after the explosion in Upper Austria, the police said.

Five children aged between 10 and 14 were injured in northern Austria on Saturday ​evening when a "war relic" that ‌was under their campfire exploded, police said on Sunday. The children were part of ...