RABAT, Morocco (AP) — Sheikh Abdessalam Yassine, the charismatic religious leader of Morocco’s largest opposition movement and longtime opponent of two Moroccan kings, died Thursday. He was 84.

Yassine, who founded Adl wal Ihsan (Justice and Spirituality), accused the monarchy of being corrupt and dictatorial and questioned its claim to religious legitimacy. His spent a decade under house arrest at the hands of Morocco’s former ruler, King Hassan II.