Nawada Sadar Sub-divisional Police Officer (SDPO) Sanjay Kumar Pandey said the incident happened on State Highway - 82, which goes from Gaya to Rajgir.
The robbers stopped the vehicles at a place called Faldu under Nardiganj police station. Many of the vehicles belonged to tourists who flock the area during the winter season.
"The two buses that were looted were part of a marriage procession. They were supposedly carrying jewellery and other valuables. Police teams have reached the spot and has started investigating the matter," the SDPO said.
