Updated

TRIPOLI, Libya -- Libya's union of journalists says authorities have arrested 10 reporters who work for a news agency controlled by the son of leader Moammar Gadhafi.

Union head Salma al-Shaab said Sunday that security forces detained the six men and four women -- including two Egyptians -- a day earlier. She said the journalists worked for Libya Press and were arrested for criticizing Libya's leadership.

The news agency is part of the al-Ghad media group belonging to Seif al-Islam Gadhafi, the reformist son of the Libyan leader.

The younger Gadhafi was a key figure in normalizing Libya's relations with the United States.

He also has been a vocal critic of Libyan politics, actively promoting the adoption of a constitution.

The Interior Ministry did not immediately return calls for comment.