Authorities in Colorado are investigating how a 20-year-old nurse died in a bungee jump accident—when the equipment was apparently working properly. Ciara Romero died after a fall Jan. 4 at the 70-foot Get Air attraction at the Silo Trampoline Park in Grand Junction, the Denver Post reports. The jump requires participants to jump off a tower connected to a rope attached to a harness. After free-falling for around 20 feet, they are supposed be caught by the device and slowly lowered to the ground. The Grand Junction Sentinel reports that in results confirmed by state investigators, the company that makes the device says it carried out tests and the "device, webbing, and triple-locking carabiner were found to be intact, and functioning normally."