A private jet crashed and burned at the airport in Aspen, Colo., Sunday, killing one of the three people on board, officials said. The Pitkin County Sheriff's Office said two survivors were hospitalized, one with serious injuries and one with minor injuries, the Aspen Times reported. The victims' had not been identified. The aircraft came to rest belly up while trying to land at Aspen-Pitkin County Airport about 12:30 p.m. local time, the Aspen Daily News reported. The cause of the crash was unknown. NBC News reported the twin-engine Bombardier Challenger 600, had made a stop in Tucson after departing from Mexico, before arriving in Aspen. Multiple witnesses, including singer Leann Rimes and comedian Kevin Nealon, posted on Twitter they saw the plane crash, NBC and ABC reported. Nealon tweeted, "Horrible plane crash here at Aspen airport. Exploded into flames as it was landing. I think it was a private jet," ABC reported. "So sad! Horrible plane crash we just saw happen at the Aspen airport," NBC reported Rimes tweeted Witnesses told the Daily News the plane's body was upside down near one end of the runway with a smaller piece that broke off resting closer to the terminal building. The newspaper said the website FlightAware.com reported the plane involved in the crash had a tail number of N115WF and is registered to "Bank of Utah Trustee," which owns aircraft in trust on behalf of third parties. The Daily News said inbound and outbound flights were canceled while crews began clearing the wreckage. National Transportation Safety Board investigators were en route from Denver.