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Loud blasts were heard in the district around 1:45 am (2345 GMT Tuesday). A little later the city was shaken by more powerful explosions.
On Tuesday, in one of the heaviest bombardments of the air war so far NATO-led warplanes carried out some 60 strikes on Tripoli, killing 31 people, Libyan government spokesman Mussa Ibrahim said.
A main target was Qadhafi's compound which has been targeted regularly since the start of the international military intervention on March 19, and most of the buildings in the Bab al-Aziziya complex have been flattened.
Copyright AFP (Agence France-Presse), 2011