A charter bus accident on the Northern State Parkway has left one person dead.Officials tell News 12 Long Island that the driver of the Atlantic Express bus was killed in the crash. The accident occurred on the westbound side of the parkway around 11:30 p.m. Sunday near the Willis Avenue exit in Roslyn Heights.Police said the bus did not have any passengers on it at the time of the accident. They say they are investigating why the bus was on the parkway since charter buses are not allowed on the Northern State.The westbound lanes were shut down between Willis Avenue and Shelter Rock Road for about nine hours due to the accident. Parts of the eastbound Northern State were also closed overnight.