Pro-Qaddafi forces have taken four more foreign correspondents prisoner. They include James Foley, a freelance reporter for online news publication GlobalPost, Spanish photographer Manu Brabo, South African photographer Anton Hammerl, and Clare Morgana Gillis, an American reporter on assignment for The Atlantic. The four have been detained since Tuesday.

Max Fisher reports that The Atlantic learned of Gillis’s capture on Thursday morning and is coordinating with Human Rights Watch, Global Post, and Libyan government officials, as is the State Department.

“We appeal to the Libyan authorities for her immediate and safe release, and for that of the three other journalists detained with her,” said Atlantic editor James Bennet.