The Russian Embassy in India has not confirmed the information yet. "We are checking the information," a consulate source told ITAR-TASS.
Uttarakhand police reported about two people dead and 11 people injured in an accident. One person missed, the police representative added. The victims were taken to a hospital by helicopter.
According to the police, the bus fell into the river at 13:20 local time (15:50 GMT). All the details of the incident are still unknown.
"We cannot confirm that Russian tourists were in the bus. The only thing we know is that there were 42 passenger seats in the bus, but there were more passengers than seats," the executive director of the Association of tour operators (ATOR) Maya Lomidze said.
She noted the place where the accident occurred was not tourist. According to the representative of ATOR, pilgrims were allegedly in the bus.