The pilgrims were returning to their home in Dhading district, 60 km west of Kathmandu, after offering prayer at a 12 yearly Hindu festival in Godavari when the bus lost balance while taking a turn at a narrow and uneven road yesterday, they said.
Three persons died on the spot yesterday and three others died today while undergoing treatment in a hospital here, according to the police.
As many as 33 people were injured in the incident. They are undergoing treatment at various hospitals in the capital.