A Tunisian appeal court on Tuesday temporarily released a United Nations official after two months in detention as part of an investigation by an anti-terrorism unit, an official spokesman said.
Last week, the United Nations called on Tunisia to immediately release Moncef Kartas, who was detained in late March at Tunis airport.
A Tunisian national, Kartas is a member of a panel of experts that monitors sanctions, including an arms embargo, on Libya and reports their findings to the UN Security Council.
"The appeal court temporarily released Moncef Kartas and the case is still ongoing," said Sofian Sliti, the spokesman for a Tunisian anti-terrorism judiciary unit.
Kartas was jailed on suspicion of obtaining information and security information related to the fight against terrorism and its illegal disclosure, officials said.
Sliti said on March 30 that Kartas had travelled in a private capacity on his Tunisian passport, meaning he was not entitled to diplomatic immunity and could be arrested.