Why was Prague placed under a papal interdict because of Jan Hus?
Prague was placed under a papal interdict in 1412 because of Jan Husâs public opposition to the sale of indulgences authorized by the antipope John XXIII to finance a military campaign.12
When Hus and his associates challenged the practices of the papal collectors, his enemies at the Roman Curia renewed his trial for heresy. Consequently, Hus was declared under major excommunication for his refusal to appear before the Curia, and an interdict was pronounced over Prague and any other location where he might reside.1
An interdict is a severe ecclesiastical penalty that forbids a specific place or territory from receiving certain sacraments and participating in church functions, effectively cutting the population off from church privileges to enforce obedience. To spare the city from these consequences, Hus voluntarily departed from Prague in October 1412.341