Three journalists working on television coverage in war-torn Yemen are believed to have been kidnapped after they went missing this week. The Washington Post reports that the journalists, who were working for Al-Jazeera, are the latest reporters to be targeted in Yemen’s civil war.

The Post reports: “Reporter Hamdi al-Bokari and crew members Abdulaziz al-Sabri and Moneer al-Sabai were last seen Monday night in Taiz, a city in southern Yemen that’s been the scene of heavy fighting for months now, the Qatari broadcaster said. The network said it was ‘in contact with related parties in Taiz’ to find the men and ensure their safety.”

Al-Jazeera’s acting director-general, Mostefa Souag, released a statement Thursday night calling for the immediate release of the three men, and saying: “Our colleagues were simply doing their job of reporting the story and informing the world on what is taking place in Yemen. It is tragic to see that in times of conflict, news organizations continue to be targeted. Journalists should have the freedom to do their work without the fear of intimidation, abduction or unlawful arrest.”