Burkina Faso's opposition is calling its uprising the "Black Spring," raising questions about possible upheaval in the rest of West Africa.
Allegedly depicting a same-sex wedding celebration on the Nile River, the online video went viral on social-media sites in August.
Boko Haram leader Abubakar Shekau mentions the girls for the first time since a video in May showed more than 100 of them in a rural location.
The unnamed woman had traveled to West Africa and had been monitoring herself for the disease when she developed a high fever Friday.
Virgin Galactic said it would cooperate with authorities in the investigation, which is expected to begin Saturday.
Remains found Friday from the downed Malaysia Airlines plane are making their way to the Netherlands for identification.
Just one day after the French government announced an investigation into the mysterious flights, more drones were spotted.