The court has charged Seif al-Islam Gadhafi with crimes against humanity for his alleged involvement in the brutal crackdown early last year on anti-government protesters who eventually toppled his father's 42-year-old dictatorship.
Seif was arrested in November by rebel fighters in Libya's remote southern desert and has been held largely without access to the outside world ever since.
Libya's new rulers say they want to try Seif. On Tuesday Aisha Gadhafi filed a request to act as a "friend of the court" to provide "concrete information" she said could help judges decide their next step.
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