A 14-year-old died after a skiing collision Sunday at Alta Ski Resort, officials confirmed Monday.

The boy, identified as Henry Kendell of Millcreek, sustained life-threatening injuries in the collision, which happened in the Sugarloaf area of the mountain. Alta Marshal’s Office and Alta Ski Patrol were dispatched around 10 a.m. on Sunday following a call about the collision.

When help arrived at the scene, medical personnel found the boy unconscious and started performing life-saving measures, according to a news release. The teen was flown to Primary Children’s Hospital, where he was pronounced dead.

The Alta Marshal’s Office is currently investigating the accident “to ensure all possible information is gathered and reported accurately.”

According to authorities, the boy collided with another skier and then ran into a tree.

An Alta spokesperson declined to comment when asked how many other fatal collisions and skiing-related accidents have occurred at Alta this ski season, if any.

“We extend our sincerest condolences to those affected by this tragic event and our thanks to those that responded,” a statement from the Alta Marshal’s Office read.