David Cameron has said the arrest of Saif al-Islam must become a "victory for international justice".
The PM said:
The Libyan government’s announcement of Saif al-Islam’s arrest shows we are near the end of the final chapter of the Qadhafi regime. It is a great achievement for the Libyan people and must now become a victory for international justice too. He could have contributed to a more open and decent future for his country, but instead chose to lead a bloody and barbaric campaign against his own people. The fate of the Qadhafis should act as a warning to brutal dictators everywhere.
Britain will offer every assistance to the Libyan government and the International Criminal Court to bring him to face full accountability and justice for what he has done. The Libyan government has told us again today that he will receive a trial in line with international standards, and it is important that this happens.