A Tibetan advocacy group says a new video refutes Chinese claims that its forces fired in self defense at Tibetans trying to flee the country last month.
The Campaign for Tibet says the video shows the Tibetans had their backs to the soldiers, were unarmed, and offered no resistance when soldiers shot at them on the Nangpa Pass on September 30.
The tape was shot by a Romanian cameraman who was on the mountain pass and was broadcast on Romanian television (Pro TV).
An unidentified man near the camera can be heard saying in English "They are shooting them like dogs."
Chinese officials say military troops shot in self defense after the refugees attacked the soldiers. They say that two of the people suffered injures and that one later died of altitude sickness.
The new video shows a distant line of figures walking through the snow on a high mountain pass when a gunshot is heard and one of the figures falls to the ground. Most of the figures in the video are too far from the camera to make out their identities.
Mountain climbers and other witnesses say they saw Chinese forces shoot and kill at least one Tibetan on the pass.
The Dalai Lama said Saturday that he was saddened by the incident. He said the Tibetans have been experiencing such cases for more than 50 years.
Hundreds of Tibetans cross the Himalayas from their Chinese-ruled territory to Nepal every year. Some try to make the trip to reach a northern town in India, where the Dalai Lama, the exiled spiritual leader of Tibetan Buddhism, lives.