DHADING: More than 30 passengers went missing when a passenger bus heading from Kathmandu to Udaypur’s Katari plunged into the Trishuli River at Dhading's Benighat on the Prithvi Highway on Thursday night. The mishap occurred at Malinga of Benighat VDC at around 10:30 pm. A police team led by Suresh Kafle, Inspector at Area Police Office Gajuri, has reached the site. Search for the bus is underway, police said. The cause of the accident was yet to be ascertained.