The self-proclaimed Islamic State of Iraq and al-Sham (ISIS) has kidnapped three African Christians in eastern Libya, the group said, publishing their passport pictures, Reuters reported on Sunday. The men come from Egypt, Nigeria and Ghana, Islamic State said in a statement on social media, without elaborating. The kidnapping took place in Noufliyah, an ISIS stronghold southeast of the city of Sirte, said a resident, asking not to be named. The militant group has expanded in the North African country by exploiting chaos and a security vacuum like it did in Iraq and Syria.