The body of Beatrice Stoeckli, a missionary from Switzerland, was found on Wednesday.
Stoeckli was abducted by Islamist extremists in Timbuktu in January 2016. Authorities reported in October that Stoeckli had been killed.
Stoeckli started working as a missionary in Timbuktu city for a Swiss church in 2000. A church leader in Mali said Stoeckli sold flowers and gave away Christian material. She was also known to be sociable, especially with women and children, the church leader said.
In 2012, she was abducted by Islamists and was released 10 days later. After her first abduction, Stoeckli left Mali when her mother and brother pleaded with her. The Swiss government also warned her about returning.
Stoeckli did return to Mali, where she was eventually abducted again in 2016.
"Beatrice Stockli is a Swiss nun who declared war against Islam in her attempt to Christianize Muslims," a masked speaker said in a video, claiming responsibility for Stoeckli's abduction on behalf of al-Qaeda in the Islamic Maghreb.