A journalists group says two reporters working for state TV in South Sudan have been arrested without charge.

The Committee to Protect Journalists says the journalists were arrested following protests and ethnic clashes last month in the northwestern town of Wau that killed about a dozen people. Video of one clash showed police opening fire on protesters.

The New York-based CPJ says Louis Pasquale and Ashab Khamis are being held in prison. Three other state journalists were arrested and released, it said.

CPJ said local journalists suspect the arrests are in retaliation for the video being passed on to international media outlets. South Sudan's information minister didn't answer calls Monday seeking comment.