Authorities clashed with Tibetan demonstrators in the United States, China, Nepal and India Saturday, amid protests in sympathy with demonstrators in Tibet.
Police in New York City reported injuries among both police officers and protesters in a clash after demonstrators reportedly threw rocks at the Chinese consulate.
It was the second day of protests outside the consulate and hundreds of protesters continued their demonstration following the confrontation.
Meanwhile, Chinese police used tear gas in western China's Gansu province to break up a crowd of several hundred Buddhist monks and others protesting in the city of Xiahe.
Police in Nepal used batons to break up a crowd of about 200 protesters outside a U.N. office in Katmandu.
In India, police arrested around 50 demonstrators trying to storm the Chinese embassy in New Delhi.
Elsewhere, a group of Tibetan exiles in India set off on a new march to their riot-hit homeland in China.
The trek Saturday followed the arrest Thursday by Indian authorities of 100 people who were attempting a similar march. A court ordered the 100 marchers detained for two weeks after they said they would not stop using India as a base for protesting Chinese rule in Tibet.
Tibetan exiles and their supporters worldwide are staging rallies in solidarity with this week's demonstrations in Lhasa, and world leaders are urging China to use restraint after reports of violence against protesters in the Tibetan capital.
The Dalai Lama, Tibet's exiled spiritual leader, is calling on both sides to refrain from violence.
Activists who support the Tibetan protests gathered in cities in the United States, Britain, India and Nepal Friday.
New York City police detained six protesters outside the Chinese consulate and the United Nations, where Tibetan exiles called for U.N. action to stop the bloodshed in their homeland.
Protesters also rallied outside China's embassies in Washington and London.
Tibetans in Nepal and India held candlelight vigils Friday night, after clashes between police and protesters near the Chinese embassies in New Delhi and Katmandu.
New York-based Human Rights Watch Friday called on Chinese authorities to stop violent attacks on demonstrators in Tibet. The rights group is asking the United Nations for an independent investigation of China's actions.
Tibet's government-in-exile, based in India, is asking all members of the international community to appeal for an end to repressive measures by China.
The Dalai Lama said the demonstrations in Lhasa represent long-standing resentment of Chinese rule, and he has counseled Beijing to address protests with dialogue, not force.
A U.N. spokesman says Secretary-General Ban Ki-moon also has urged everyone involved in the protests to avoid confrontation and violence.
U.N. human-rights chief Louise Arbour appealed to Beijing to allow Tibetans to practice their right of freedom of expression and assembly.
Officials in Washington say the U.S. ambassador to China (Clark Randt) called on government officials to exercise restraint during a meeting Friday in Beijing.
The White House has called on Beijing to respect Tibetan culture, and reiterated the U.S. government's call for dialogue between China and the Dalai Lama.
Some information for this report provided by AP.