Manahawkin, N.J. ? An 8-year-old girl died and three others were injured Wednesday when an oak tree crashed down on them during a first-aid class at a Boy Scout camp, authorities said.

The girls were attending an overnight camp when the 31-foot tree snapped and crashed through a tarp over a picnic table, landing on the girl’s head, Police Chief Kenneth Flatt said.

The counselor who had been teaching the first aid class administered CPR, but the girl was later pronounced dead at a hospital in Manahawkin.

The other girls – ages 9, 10 and 16 – were treated and released. One girl suffered a broken ankle; the others had bruises and scrapes.

The victim was from Doylestown, Pa., but her identity was not released.

The tree accident was the latest in series of tragedies to strike Scouting-related activities this summer.

Four adult Scout leaders were killed in a July electrical accident in Virginia at the National Boy Scout Jamboree. Five other people have died this summer from drowning and lightning during Scout outings in Wyoming, New Mexico, Utah and California.