In that year Sayri Tupac went over to the Spaniards and left Vilcabamba for the warmer climate of the Yucay Valley, where he
was eventually poisoned by his own people. His brother, Titu Cusi Yupanqui, became Inca and reopened the war on the
Spaniards. Every attempt to invade the mountains ended in failure. In 1565 Friar Diego Rodriguez entered the Inca stronghold
alone for the purpose of inducing the Inca to come out. His description of the rituals surrounding the Inca and the number and
belligerency of the warriors is important for its information on the strength of the Inca state. The attempt to induce the Inca to
leave ended in failure. Another missionary tried again the following year; but during the negotiations, Titu Cusi became ill and
died. His death was laid to the missionary, who was executed, as were the members of another embassy of Spaniards.