Update (1:06 p.m. EDT): CNN's live broadcast contradicts Al Jazeera's, reporting that the embassy staff was inside when the protest started, and some staff is still there, with U.S. marines on the roof monitoring the situation. The protesters haven't reached the main building, the network reported, but they've burned some 50 cars, which accounts for that black smoke.

Update (1 p.m. EDT): According to Al Arabiya's Twitter stream, three protesters have been killed in front of the Tunisian embassy and 28 injured. Meanwhile, Al Jazeera English has death tolls from the rest of the protests:

Latest death toll in #US embassy attacks across Muslim world: 3 in Sudan, 2 in Lebanon & 2 in Yemen aje.me/Q7QDaB #antiIslamfilm — AJELive (@AJELive) September 14, 2012

Update (12:27 p.m. EDT): Fortunately, per AJE's broadcast, the staff was apparently not in the embassy when it was attacked.

Update (12:16 p.m. EDT): Al Jazeera's live stream shows the smoking U.S. embassy in Tunisia, where police continue to battle protesters:

Update (12:10 p.m. EDT): The Telegraph has a bit more on that American school reportedly attacked during the protests in Tunisia: "The school was closed and no one is believed to have been hurt. 'Obama, Obama, we are all Osamas,' the protesters chanted as they lit fires." CNN's broadcast reporter says the school is a primary school where classes are taught in English, across the street from the American embassy.

Update (12:02 p.m. EDT): Good news from the U.S. embassy in Khartoum, Sudan, via CNN:

Journalist Isma'il Kushkush says no protesters have been able to get inside the compound, and that police and security forces appear to have the situation under control. Small fires are burning nearby. Kushkush said he believes protesters set tires ablaze.

Update (11:48 a.m. EDT): Ugh

Al Jazeera Arabic confirms the death of 3 protesters in front of US embassy as a result of being run over by Sudanese Police vehicles #Sudan — Usamah Mohammed (@simsimt) September 14, 2012

Updae (11:41 a.m. EDT): Wall Street Journal Afghanistan editor Yaroslav Trofimov tweeted this screen grab from Al Jazeera of the black flag flying over the U.S. embassy in Tunisia:

Update (11:27 a.m. EDT): Meanwhile, back in Tripoli, KFC wasn't the only target for protesters furious with the United States. They also trashed a Hardees, per this Reuters photo:

Update (11:23 a.m. EDT): Reuters tweeted that protesters had set fire to an American school in Tunis, but there are no more details than that just yet.

Update (11:19 a.m. EDT): Al Jazeera on the chaos at the U.S. embassy in Tunis:

"Like a war zone outside [US] embassy. Police are trying to protect it. Protesters tried to enter from every side." - Yousef Gaigi in Tunis — AJELive (@AJELive) September 14, 2012

Update (11:16 a.m. EDT): Tunisian blogger Sarah Ben Hamadi tweeted this dramatic photo of the fire at the U.S. embassy there: