(KRON) -- Heavenly Mountain Resort said it is investigating an incident that occurred on its Comet Express chairlift on Monday. According to the Heavenly website, the chairlift is currently closed. East Bay restaurant announces closure amid ‘Ladies Night’ discrimination lawsuit "Heavenly Mountain Resort can confirm an incident occurred on its Comet Express chairlift today," the resort said in part. "The safety of our guests is our top priority and the resort is investigating the incident." A photo from the scene appeared to show to chair lift chairs that had come in contact with each other. A second photo appeared to show several first responders gathered beneath a chair lift pole, roughly 25 feet below the chairs above. Flight data indicates that a medical air ambulance transported an unknown number of victims from South Lake Tahoe to Renown Regional Medical Center in Reno on Monday. This is a developing story. Check back for additional information.