ANCHORAGE, Alaska - Alaska State Troopers say a brown bear that was with her cub attacked teens participating in a survival skills course, badly injuring two in the group.

Troopers say the teens were among seven students participating in a 30-day backcountry course by the National Outdoor Leadership School when the attack occurred Saturday night about 120 miles (193 kilometers) north of Anchorage. They were rescued early Sunday.

NOLS spokesman Bruce Palmer says 17-year-old Joshua Berg and 17-year-old Samuel Gottsegen were the worst injured with bear bite wounds. They are listed in serious condition at an Anchorage hospital.

Palmer says two others also were injured to a lesser extent.