Including the latest incidents, at least 47 Tibetans have set themselves on fire since March 2011 to protest Chinese rule over Tibet, according to rights groups.
In the past week, the International Campaign for Tibet, based in Washington, reported two self-immolations, while the United Kingdom-based Free Tibet said there were three incidents in the same time period.
China has ruled Tibet since 1950, when Communist troops marched in and announced its "peaceful liberation". Beijing insists Chinese rule has brought development and prosperity and denies trampling on Tibetan rights.
Surge in Tibetan self-immolations challenges Chinese rule-rights group | Reuters