Muammar Gaddafi, the Libyan leader, and his key aides will be investigated for alleged crimes against humanity by the International Criminal Court, the chief prosecutor.
Reports by human rights groups say over 6,000 people have been killed so far in the government's harsh crackdown on anti-government protesters.
The Libyan revolution came in the wake of the monumental events in Tunisia and Egypt, in which dictators who led undemocratic and repressive regimes were driven out of power.
Waves of demonstrations have rocked several other Middle Eastern and North African countries in recent weeks.
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