(CNN) – A 6-year-old girl was fatally injured aboard an amusement park ride in Glenwood Springs, Colorado, according to the Garfield County Coroner’s Office.
The girl, from Colorado Springs, was on vacation with her family and they visited Glenwood Caverns Adventure Park on Sunday, according to a statement from the coroner’s office.
The girl had climbed the attraction known as the Haunted Mine Drop in the park, according to the coroner. The Haunted Mine Drop is billed as the world’s first downhill ride attraction to go underground, according to the park’s website.
“Perched atop Iron Mountain, the new attraction leaves riders 33 meters into the mountain as they listen to ghost stories related to the mining of yesteryear,” reads a 2017 press release when the attraction.
The nature of the unidentified victim’s injuries was not immediately available and an autopsy was scheduled for this week, the coroner’s office said Monday.
The statement says the incident is being investigated by the sheriff’s and coroner’s offices. He did not provide details on what could have happened.
“Immediately after the incident, Glenwood Caverns employees initiated first aid until paramedics from the Glenwood Springs Fire Department arrived and determined that the girl had died,” the coroner’s office statement said.
Some of the attractions have age and height requirements, according to the park’s website. The Haunted Mine Drop asks for a minimum height of 46 inches or 1.16 meters.
“We are deeply saddened and ask that you keep the family of the deceased in your thoughts and prayers,” the amusement park said in a statement posted on its website.
Glenwood Caverns Adventure Park said it would be closed until Wednesday after the death.
CNN’s Leslie Perrot contributed to this report.