The Diocese of Kafanchan, located in the area, estimated more than 800 people were killed, and damages to property and foodstuffs topped $17.5 million.
Hunger is so severe in drought-ridden southern Madagascar that many people in remote villages have eaten almost nothing but cactus fruit for up to four years.
In 14 points, the bishops ask forgiveness for the role that some members of the Catholic Church played during the genocide, especially for the pastors that "sowed seeds of hate."