article_snippet: But it has emerged as a place of increasing concern as the threat of Islamist extremism has intensified in the region.
article_snippet: Here's a country-by-country look -- although not exhaustive -- at how Islamist extremism has reared Islamist extremism head across a swath of Africa.
article_snippet: Besides the claim growing presence in Tripoli, ISIS is now the dominant force in Derna in eastern Libya and controls parts of the town center of Sirte, the hometown of former Libya strongman Moammar Gadhafi.
article_snippet: However, since 2011 jihadist activity in Libya has declined.
article_snippet: The fear is that many of these fighters will return to North Africa to join ISIS-affiliated groups there and carry out attacks.
article_snippet: Al Qaeda's North African affiliate is also a threat.
highlights_snippet: Islamist extremism poses a growing threat in parts of North and sub-Saharan Africa .
  
highlights_snippet: Extremist groups operating in Africa include ISIS, al Qaeda in the Islamic Maghreb, Al Shabaab and Boko Haram .