The International Criminal Court is holding a two-day hearing into where the eldest son of former Libyan dictator Muammar Gaddafi should be put on trial.
Seif al-Islam Gaddafi is accused by the international court in The Hague of crimes against humanity for his alleged involvement in the deadly crackdown on dissent against his father's rule.
Libyan authorities say they want to prosecute him at home, where he is being held.
ICC spokesman Fadi El Abdallah said Libya is likely to argue at today's hearing that it is "capable and willing to prosecute Mr Gaddafi".
Under the court's founding statute, it can only step in if the country where crimes were committed is unable or unwilling to prosecute.
No ruling is expected this week on where Gaddafi will be tried.