NATO carried out airstrikes on Libya's capital, Tripoli, for the fifth-straight night late Friday and early Saturday, news reports said.
State television said several explosions were heard and smoke was seen rising above the city, dpa reported.
The targets of the attack was not immediately known.
NATO has launched more than 8,000 sorties in its air campaign, which began in late March after the UN Security Council passed a resolution ordering the protection of civilians in a conflict between leader Moamer Gaddafi's regime and anti-government rebels.
The opposition, which controls key eastern cities such as Benghazi, said the government has killed more than 12,000 civilian in the past three months in the conflict.
The renewed airstrikes followed a Group of Eight meeting in France Friday, at which the leaders of Britain, Canada, France, Germany, Italy, Japan, Russia and the United States said, "Gaddafi and the Libyan government have failed to fulfil their responsibility to protect the Libyan population and have lost all legitimacy."
"He must go," they said.
US President Barack Obama also said the NATO airstrikes would not end until the Libyan leader was ousted from power.