A Tibetan activist who set fire to himself to protest Chinese rule on Friday has succumbed to his burns, marking the third self-immolation fatality in a week.The 24-year old Choepa died as he was take away by Chinese security forces after he torched himself at the Meruma township in the Ngaba Tibetan Autonomous Prefecture.It happened when the Chinese police took him into their custody and rushed him to Barkham county.He died just before reaching Barkham town center.His body was cremated at Barkham and the remains were handed over to his family members.Choepa had been on the wanted list of the Chinese authorities for being instrumental in organizing a massive Tibetan protest against Chinese rule in Meruma in January.