Conversation so far:
What was Afonso de Albuquerque arrested for?
after a petition from former officers with the support of Diogo Lopes de Sequeira claiming him unfit for governance, Afonso de Albuquerque was sent in custody to St. Angelo Fort
Was Afonso de Albuquerque alone at St. Angelo Fort?

Question: How long was he imprisoned?
Self-contained rewrite: How long was Afonso de Albuquerque imprisoned in St. Angelo Fort?