(BBC News) Hundreds of Libyan protesters stormed the headquarters of Islamist group Ansar al-Sharia in a backlash after last week's attack on the US consulate.
Security forces were also involved and took over several militia bases, evicting many militia fighters.
The assault follows a day of anti-militia protests in Benghazi, which were sparked by the storming of the US consulate.
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Some 30,000 anti-militia protesters had marched in Benghazi earlier on Friday.