While Palla, a resident of Buggawala, and his niece Komal were killed on the spot, his sister-in-law Mukesh Devi was injured in the mishap at Doon highway as they were on their way to attend a wedding, Jagdish Sharma, SP (Rural) said.
The bus driver has been arrested, Sharma said, adding, the bodies have been sent for postmortem.
Meanwhile, in another incident, a 70-year-old woman was killed and four persons were injured when their car lost balance and hit a bridge.