Tripoli - International Criminal Court prosecutor Luis Moreno-Ocampo said on a visit to Tripoli on Wednesday that Saif al-Islam Gaddafi will face justice no matter where his trial is ultimately held.
"Judges of the ICC will decide who makes the trial," Ocampo told AFP at the start of a three-day visit to the North African nation.
"The interesting thing is that the ICC wants to do justice on Seif [and] Libya wants to do justice on Seif, [so] there will be justice for Seif," he stressed.
The fate of slain dictator Muammar Gaddafi's son Saif al-Islam, who is wanted by the ICC for crimes against humanity, is expected to top the agenda in his talks with senior Libyan officials.
Seif, who was arrested on November 19 in southern Libya, is being held in a secret detention centre in Zintan, 180km southwest of Tripoli.
The ICC issued an arrest warrant for him in February 2011, when pro-Gaddafi forces sought to crush a popular uprising with brutal force.
The new authorities stress that they want to try Seif, 39, in his home country and are expected to challenge the ICC's jurisdiction over the case.
"Libya says they will present the challenge in the end of April, so I need to be prepared," said Ocampo, who is due to meet with interim leader Mustafa Abdel Jalil later in the day.
The ICC envoy said he would not travel to Zintan, where Saif is being held, because Gaddafi's son still does not have a lawyer.
"I asked the general prosecutor about the situation of Saif - he is saying that he is in good shape, that Saif is okay," Ocampo added.
The ICC official added that he also plans to visit Misrata where he is investigating rape cases.
"We believe we can present a new case there against all the individuals," he said, without specifying whether he meant former rebels or Gaddafi's fighters.
Both camps have been accused of committing war crimes in the 2011 conflict.