In a major accident, 44 people were killed when a private bus rolled off the road and fell into Tons river in remote Nerwa area of Shimla district along the border of Sirmaur district in Himachal Pradesh. Police feared that casualties could increase as 56 people were travelling in the ill fated bus. The accident took place some 12-km from Uttarakhand border, almost all the passengers were from Tyuni and nearby areas of Dehradun district. Sources said the accident occurred in the morning hours while the private bus was on its way to Tiyuni in Uttrakhand. After receiving the information, Sirmour Police team has launched the rescue work while Shimla Police team is still on its way to the accident spot. Shimla, SP, D W Negi said that private bus met with accident in the jurisdiction of Nerwa Police Station of Shimla district located close to the border of Sirmaur district. He said 56 passengers were travelling in the bus and casualties could increase. Meanwhile, State Disaster Response Force (SDRF) teams from Chakrata and Dehradun have left for the accident spot for relief and rescue operation. "Two SDRF teams comprising of around 20 men, equipped with all necessary equipment's, have rushed for the accident spot. More teams would be sent if need arises," said Jagat Ram Joshi, SDRF Commandant.