China's state news agency reported the accident but did not confirm the number of fatalities. Xinhua News Agency reported that bodies and survivors were pulled from the bus, sending the injured to a hospital in the capital of Lhasa.
According to a news report, the bus careened off the cliff when a pileup occurred on the road in the county of Nyemo.
The road where Saturday's pileup occurred had a massive landslide earlier in the week, covering a 280-meter (yard) stretch of the road in debris, according to China's weather services.
Police estimate the bus had been carrying about 40 tourists at the time of the accident.
[Image via AP]