The death of the Fourth Dalai Lama in 1617 led to open conflict breaking out between various parties. Firstly, the Tsangpa dynasty, rulers of Central Tibet from Shigatse, supporters of the Karmapa school and rivals to the Gelugpa, forbade the search for his incarnation. However, in 1618 Sonam Rabten, the former attendant of the 4th Dalai Lama who had become the Ganden Phodrang treasurer, secretly identified the child, who had been born to the noble Zahor family at Tagtse castle, south of Lhasa. Then, the Panchen Lama, in Shigatse, negotiated the lifting of the ban, enabling the boy to be recognised as Lobsang Gyatso, the 5th Dalai Lama.