Write a news story using the following clues. 15 die in bus mishap-a night bus(number)-Kathmandu to Dang collided with a truck loaded with buffaloes at Lamahi, Arjunkhola turning many buffaloes ran away-13 bus passengers died on spot-one on the way to hospital-14 injured-referred in nepalgunj after providing first aid at Lamahi hospital-drivers of both bus and truck are in police custody.