(Fox News) -- U.S. Marines are on the ground in Yemen to deal with the aftermath of an attack on the U.S. Embassy in the capital city of Sanaa, as the Obama administration warns of sustained protests outside diplomatic posts across the Middle East and North Africa.
Pentagon spokesman George Little told Fox News the team is in Yemen as a "precautionary measure."
The move comes as Reuters reports that protesters have jumped over U.S. Embassy walls in both Sudan and Tunisia. Reuters reports that protesters also set fire to trees and broke windows inside the U.S. Embassy compound in Tunis.
That is just a snapshot of the violent unrest playing out Friday, in the widest protests yet across the Muslim world.
One protester was killed in the northern Lebanese city of Tripoli in clashes with security forces, after a crowd of protesters set fire to a KFC and an Arby's restaurant. Protesters hurled stones and glass at police in a furious melee that left 25 people wounded, 18 of them police.