TRIPOLI, Aug 27 – The hijackers of a Sudanese plane that was forced to land in Libya freed all the passengers on Wednesday but still held seven crew members, a Libyan aviation authority official said.

The airliner was seized on Tuesday after leaving Sudan’s war-battered Darfur region and was forced to land in the remote Sahara desert oasis of Kufrah. The hijackers said they were members of a Darfur rebel faction.