Libya has freed four officials from the International Criminal Court who were detained for a month for smuggling documents to the jailed son of the late dictator Moammar Gadhafi.

ICC President Sang-Hyun Song apologized to Libya Monday, saying the four had no intention of compromising Libyan national security. The four, including Australia's Melinda Taylor — Seif al-Islam Gadhafi's lawyer — were flown Monday to Rome.

Taylor slipped documents to Gadhafi in his jail cell in the city of Zintan. It is not clear what the papers were, but Libyan authorities accused the four ICC members of spying.

Libyan rebels captured Gadhafi after his father's government collapsed last year. They accuse him of war crimes.

He is at the heart of a dispute between the new Libyan government and the ICC. The court wants to extradite Gadhafi for trial, saying it fears he may not get a fair hearing in Libya. The Libyans insist on their right to try him.