Suspected Maoists allegedly pelted stones at the Bubaneswar-Motu government bus damaging its windows while police seized two landmines and four detonators in Orissa's Malkangiri district on Sunday.
About 30 people, armed with bows and arrows, waylaid the bus at Muraliguda in the district and asked the passengers to get down before damaging it, police said.
No one was, however, injured the incident, they said.
When police reached the spot, they found two persons digging the approach road at a distance but the duo managed to escape.
Two landmines, each weighing five kg, four detonators and 200 metres of wire were seized from spot, police said, adding no arrest had been made in this connection.
Police and CRPF personnel had intensified their combing operation following the incident, they added.