Scores of others have since followed suit, with the frequency of the self-immolations increasing significantly last year, according to Free Tibet.
Protests in other countries
Several other Tibetans have carried out self-immolations in other countries, including India. And on Wednesday, a Tibetan man set himself on fire in front of a famous Buddhist shrine in the Nepalese capital of Kathmandu, police said.
The man later died of his injuries while undergoing treatment in a hospital, police spokesman Keshav Adhikari said Thursday.
Sandwiched between China and India, Nepal is home to thousands of Tibetan refugees. Many of the Tibetans who cross the Himalayan border from China into Nepal eventually make their way to India, where the Tibetan government in exile is based.
But Tibetan refugees in Nepal have claimed the Chinese government officials are pressuring their Nepalese counterparts to make the country less hospitable to Tibetans.
Beijing has taken a tough line on Tibetan self-immolators and their associates inside China, accusing the Dalai Lama, the exiled Tibetan spiritual leader, of fomenting unrest.
Last month, a court in southwestern China gave heavy sentences to two ethnic Tibetans convicted of murder for "inciting" people to set themselves on fire.
The Dalai Lama, who fled to India in 1959 after a failed uprising, has long denied China's assertion that he's seeking Tibetan independence. He says he wants only enough autonomy to protect its traditional Buddhist culture.
Beijing rejects accusations of oppression, saying that under its rule, living standards have greatly improved for the Tibetan people. It makes centuries-old historical claims on the region.