More NATO air strikes have hit Muammar Gaddafi's compound after the Libyan leader was shown on television for the first time since an aerial attack killed his son on 30 April.
Libyan officials say three people were killed and 25 wounded in the latest strike.
The Bab al-Aziziyah compound in the capital, Tripoli, has been targeted several times since NATO began its campaign in March.
A government spokesperson denied the compound contained any military facilities.
Meanwhile, the Transitional National Council of Libya is sending a delegation to the United States to meet key members of the Obama administration.
Britain has also invited the rebels to open an office in London.
The rebels have been fighting Colonel Gaddafi for almost three months.
They control the east of the country, while Colonel Gaddafi's forces control the capital, Tripoli, and nearly all of the west.