Calls the fighters "revolutionaries" in apparent effort to defuse tension after a 10-day siege of government institutions.
Move comes hours after Mohammed al-Bargathi said he was quitting in protest against the siege of two government ministries.
Denounced militias' recent blockade of government buildings and came under attack by supporters of the armed groups.
Seif al-Islam Gadhafi is accused of harming state security, but his hearing is adjourned until Sept. 19.
Libyan govt. cracking down on armed groups.
Early Tuesday detonation left building with major damage.
Allege corruption, mismanagement and Ghadafi recidivism; threaten strike.
Disappearance comes amid confrontations between government and militiamen, officials said Monday.
Senate GOP stalled nomination of President Obama's nominee to be the next defense secretary, though he'll get another chance later in the month.
Controversial defense secretary nominee expected to get an up-or-down vote despite intense GOP opposition.