A person was killed when a bus fell into a precipice of about 75 feet in the Batalgala area on the Salankanda-Hatton main road.
Another 19 persons were injured and the injured were admitted to the Dickoya Base Hospital for treatment.
The accident had taken place while the bus was transporting employees to a private company in Hatton.
Police suspect that the driver could not control the bus due to the high speed and fell into the precipice.
The driver fled after the accident and Hatton Police are conducting further investigations into the incident.