Ferdinand and Isabella had heard that Columbus and his brothers were not doing a good job governing the colonies in the New World. Columbus had not brought back much in the way of gold or other riches, and the King and queen thought he might be cheating them. They sent a nobleman, Bobadilla, to investigate. Bobadilla arrived in August of 1500 with 500 assorted Spaniards. Bobadilla found some of the rumors to be true and threw Columbus and his brothers in a dungeon in chains. They went back to Spain still shackled in October of 1500. Columbus was able to talk his way out of his troubles and made a fourth voyage.