CAIRO (AP) — The top Islamic authority in Egypt, revered by many Muslims worldwide, launched an Internet-based campaign Sunday challenging an extremist group in Syria and Iraq by saying it should not be called an “Islamic State.”

The campaign by the Dar el-Ifta, the top authority that advises Muslims on spiritual and life issues, adds to the war of words by Muslim leaders across the world targeting the Islamic State group, which controls wide swaths of Iraq and Syria. Its violent attacks, including mass shootings, destroying Shiite shrines, targeting minorities and beheadings including American journalist James Foley, have shocked Muslims and non-Muslims alike.