Sixteen tourists were injured when a private bus they were travelling in overturned on the Kiratpur Manali National Highway near Bilaspur town on Friday.

The incident occurred at around 2 am when the bus was on its way to Chandigarh from Manali, they said. Of the total injured, three have been referred to PGI Chandigarh and as many are undergoing treatment at Bilaspur while others were discharged after administering first aid, Deputy Commissioner Bilaspur Pankaj Rai said.

Preliminary investigations pointed out that the bus driver was unable to negotiate the curve and the bus overturned, police said.

A case of negligent driving has been registered against the driver and further investigations are underway, they said.