(CNN) -
The United States faced violent protests
outside embassies in Egypt and Yemen on Thursday, even as it was
deploying warships as part of the hunt for those behind the deadly
attack against U.S. personnel in Libya.
In
Cairo, on the third day of protests, demonstrators threw rocks and
Molotov cocktails as police tried to disperse them by firing tear gas
canisters.
At least 13 protesters and six police officers were injured, Egyptian government officials said.
In Sanaa, Yemen, demonstrators breached a security wall at the U.S. Embassy as several thousand people protested outside.
An
anti-Islam film, apparently produced by an American, is blamed for much
of the fury bubbling over at protests in these Islamic nations.
Numerous questions surround who made the film, which has a trailer on YouTube.
But
sources tracking militant Islamist groups in eastern Libya say the
deadly attack Tuesday night that killed four U.S. personnel, including
Ambassador Chris Stevens, was most likely carried out by a pro-al Qaeda
group. President Obama has vowed that "justice will be done" after the
attack on the U.S. Consulate in Benghazi.
Warships, carrying guided missiles, and unmanned drones are being sent to help search for the killers.
A
group of Marines called a Fleet Antiterrorism Security Team was
deployed to Libya to help secure U.S. facilities, two U.S. officials
said. About 50 Marines were headed to Tripoli and could deploy elsewhere
in Libya after their arrival, the officials said.
While Libya, Egypt and Yemen were of primary concern, there were protests at other U.S. embassies as well.
The United States called on U.S. citizens to stay away from the embassy in Khartoum, Sudan, on Wednesday, amid protests.
And
photos showed protesters in front of U.S. embassies in Tunisia and
Morocco. Palestinians demonstrated outside U.N. headquarters in Gaza,
and Palestinian men burned a U.S. flag at a demonstration in Gaza City.
One photo from Cairo depicts a Jewish star with the words in Arabic, "Remember your black day 11 September."
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