International Criminal Court Prosecutor Luis Moreno-Ocampo is flying to Tripoli for talks with Libyan authorities about their plans to put on trial Moammar Gadhafi's son and one-time heir apparent Seif al-Islam Gadhafi.

Seif was captured last weekend in southern Libya and is being held by fighters there. A local spokesman for Libya's new leadership says former intelligence chief Abdullah al-Senoussi also was captured over the weekend and is being held in the city of Sabha.

Moreno-Ocampo said in a statement Tuesday, November 22, that both men "must face justice."

Seif and al-Senoussi have been charged with crimes against humanity for their alleged roles in the brutal crackdown on dissent that started in February.

Rights groups have called on Libya to hand both men over for trial in The Hague, The Associated Press reported.