 In 1531 a complaint was sent by the encomenderos of Hispaniola that Las Casas was again accusing them of mortal sins from the pulpit.In 1533 he contributed to the establishment of a peace treaty between the Spanish and the rebel Taíno band of chief Enriquillo.In 1534 Las Casas made an attempt to travel to Peru to observe the first stages of conquest of that region by Francisco Pizarro.