Meanwhile, fewer appear willing to self-immolate as authorities move to punish surviving family members and friends.
Police take his uncle into custody the following day, a local source says.
She had been convicted with five others for supporting a self-immolation protest challenging Chinese rule in Tibetan areas.
They had protested Chinese crackdowns in Tibetan areas and called for the Dalai Lama's return.
The move follows earlier efforts to 'modernize' the central Barkhor area in the Tibetan regional capital.