At least 13 people from Gujarat were killed and six others injured when the bus in which they were travelling fell into a cliff at Sukkhitop area in Uttarkashi district of Uttarakhand on Sunday, official sources said in Dehradun.
The mishap occurred when the mini bus, which was carrying a total of 19 passengers, was returning from the Gangotri shrine.
The injured have been admitted to the district hospital in Uttarkashi where the condition of two of them is stated to be critical.
The exact cause of the accident was not immediately known.
Chief Minister B C Khanduri has expressed grief over the accident and asked the district administration to give ex-gratia to the next of the kin of the deceased and provide best possible medical aid to the injured.
Khanduri has also ordered a magisterial inquiry into the accident.