Militants said Wednesday they had kidnapped the brother-in-law of Iraqi Defense Minister Hazem Shaalan (search) and demanded he end all military operations in the holy city of Najaf, according to a video, Al-Jazeera television reported.

The authenticity of the video could not immediately be verified.

The militants, calling themselves the "Divine Wrath Brigades," said they kidnapped Maj. Gen. Salah Hassan Lami (search), Shaalan's brother-in-law and the director of military affairs at the Defense Ministry, according to Al-Jazeera.