A 12-year-old boy, Logan Goodwin of Hermosa Beach, California, died while skiing at Breckenridge Ski Resort on Saturday, April 8, after colliding with a tree, the Summit County Sheriff’s Office confirmed Monday.

Breckenridge Ski Patrol contacted the sheriff’s office at around 2:15 p.m. on Saturday to report the accident. Goodwin reportedly hit a tree stump while skiing near upper Springmeier, a beginner run on Peak 8, and was taken to Children’s Hospital in Aurora via Flight for Life, according to a sheriff’s office news release.

Goodwin had been wearing a helmet at the time of the accident but died at the hospital on Sunday due to blunt force trauma to the abdomen, the Summit County coroner’s office said.

The death is the 13th ski-related fatality at a Colorado resort so far this season and the fifth to occur in Summit County. That pushes the number of ski deaths in the 2016-17 season above the annual average of 12 over the past 10 years, according to data compiled by the Summit Daily.

It also makes this season the deadliest since 2011-12, when a record 22 people died while skiing or riding in the state.

All of Summit’s skier deaths this season have occurred at Breckenridge. The resort also accounts for the last eight consecutive ski deaths in the county and nine of the last 12.

“Breckenridge Ski Resort, Breckenridge Ski Patrol and the entire Vail Resorts family extend our deepest sympathy and support to our guest’s family and friends,” vice president and chief operating officer of Breckenridge Ski Resort John Buhler said in a release.

The release said that the boy was 11 years old, however the county coroner’s office said it had confirmed that he was 12.

The most recent fatal accident in the county prior to Saturday’s occurred on Friday, March 3, when 15-year-old Tess Smith crashed while skiing at Breckenridge and died two days later.

According to the National Ski Areas Association, a Lakewood, Colorado-based trade group representing the country’s resort owners and operators, there were 39 total fatalities nationwide in 2015-16.