At about midnight ; Public security bureau officials in Aba (Ngaba) county ; detained three Tibetan males ; Lobsang Jamyang (age 16) ; Wangchug ; and Sonam ; from Lobsang Jamyang's family residence. Armed police broke through door (RFA) and detained the males without providing any explanation or a detention warrant (Phayul). The detentions were apparently linked to a police crackdown ordered on March 19 ; the day before Tibetans living in exile began voting for a head of the Tibetan government-in-exile ; to "clamp down on celebrations" associated with the election.