Armed men attacked the cemetery of a protestant mission in Mukubungu, the Democratic Republic of Congo.
Islamic extremism remains a deadly plague for Christians around the world.
For years, dozens of armed militias have wreaked havoc in the DRC, a predominately Christian nation.
The desecration in the diocese of Mbuji-Mayi were condemned by Prime Minister Sama Lukonde Kyenge.
Earlier this year, the U.S. Department of State designated ADF as a Foreign Terrorist Organization.