A large oak tree limb fell on a group of kids attending summer camp, fatally injuring one young child, officials said.

An eight-year-old boy died after a tree branch collapsed on him and injured four others while he was attending a summer camp at King Gillette Ranch in Calabasas on Wednesday, authorities said.

CALABASAS PARK, Calif. (CNN) - An 8-year-old California boy was killed Wednesday after a heavy tree branch fell on him at a Calabasas park. It happened during a summer camp in the park, as a group was gathering under a large oak tree at the end of the day.