KAWASWOTI: At least 10 people were injured when a passenger bus collided with a culvert at Debchuli municipality-2 of Nawalparasi along the East-West Highway on Thursday. The Kathmandu-bound bus (Na 4 Kha 7715) from Surkhet met with the accident due to high speed, said the Area Police Office Nawalpur. The injured are undergoing treatment at Chitwan Medical College in Bharatpur. Two of the injured are critical, police said. The bus was carrying 40 passengers. Bus driver went at large after the accident, police said.