Authorities aren't sure what caused the accident.
A mom of two died when she and her two daughters fell 25-feet off of a ski-lift in Colorado on Thursday morning, according to police.
Kelly Huber, 40, and her two daughters, 9 and 12 years old, were vacationing from Texas when the fall occurred at the Ski Granby Branch, reports said.
Read: Hiker Carries 280-Pound Injured Man on His Back, Downs Double Portion of Tacos
Huber was pronounced dead at the hospital a short time later while her 12-year-old daughter has since been treated and released from the hospital. Her 9-year-old daughter was injured as well but her condition remains unknown.
Authorities said they are not sure what caused the fall and they are investigating.
Read: Watch Teenager Dangle From Helicopter After He is Rescued From Ski Lift
It’s reportedly the first chairlift fall in Colorado in 14 years and the resort’s first-ever.
“It’s really important to understand how rare something like this is,” he said of such falls. “It’s always tragic when there’s a serious injury or fatality, but ... these don’t happen very often,” said Chris Linsmayer, spokesman for Colorado Ski Country USA.
Watch: People Catch 11-Year-Old in Tarp After Being Stuck Dangling from Ski Lift