At least 17 people were killed and 25 others injured when a bus rolled 250 feet down into a gorge near Shimla on Friday morning.
The accident took place near Ghanahatti, on Shimla-Bilaspur highway when the private bus carrying about 40 people was coming to Shimla from Dhami, official sources said.
Eight people died on the spot while six succumbed to injuries on way to hospital and three died in Indira Gandhi Medical College hospital in Shimla.
The condition of four injured persons were "very critical" and the number of dead could be more as some bodies were yet to be extricated from the bus.
Most of the victims were daily commuters, they said adding the dead were yet to be identified.