Additional Superintendent of Police of Sirmaur district, Virender Thakur, said the bus was on its way from Renuka area to Nahan. Those injured have been taken immediately to Nahan district hospital, he added.
A rescue and relief operation in the accident area is currently underway.
In another incident that took place earlier in the day, as many as 21 people were injured after a tourist bus they were travelling in fell into a gorge at Kiari Nallah on the Solan-Shimla border.
Two people, including the driver, got seriously wounded while the rest sustained minor injuries.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)