"Urgent. Soldiers of the Islamic State captured 21 Christian crusaders," was a barely noticed statement issued on social media last month by Isis - not in Syria or Iraq, but in Libya.
The fate of the hostages - believed to be Egyptians - remains unknown, but that is not what will worry officials in London, Washington and elsewhere. As Islamic State (Isis) in Syria gets the headlines, the group's affiliates in Libya quietly gain ground and threaten another failing state.
On January 28, the Corinthia Hotel in Tripoli was attacked by Islamists in a raid that cost at least nine lives, including that of an American contractor. Again, it was Isis that quickly claimed responsibility.
According to the Tripoli-based think-tank Kalam, the situation in Libya is increasingly unstable, which, as in Syria, Isis is set on exploiting. "The continued political and military chaos following the ousting of Gaddafi in 2011 has provided an ideal situation for extremist organisations such as IS to expand throughout Libya.
"In the months following [the Islamist group Majlis Shura Shabab al-Islam's] declaration of allegiance to IS in October, attacks attributed to other IS-related groups have occurred across all regions of Libya," the think-tank says.