The deceased were identified as Rubel Barua, 40, a local activist of BNP and son of Shyabhoranjan Barua, Nippu Barua, 43, son of Meghal Barua and Sani Barua, 37, son of Suresh Barua of Mayani Barua Para in Mirsarai upazila.
Quoting local people, Atik Majum, officer-in-charge of Mirsarai Police Station, said the accident occurred at around 4 am on Sufia road when the speeding bus hit the motorbike carrying three people.
The victims were returning home after having breakfast at a hotel. The three died on the spot, reports UNB.
Police later recovered the bodies.