Iraqi police have arrested a key aide to the leader of the Mosul branch of the al-Qaeda in Iraq terrorist group, the government said Sunday. Mutlaq Mahmoud Mutlaq Abdullah, also known as Abu Raad, was arrested Saturday. He is considered a key facilitator and financier for a militant identified by the alias Abu Talha, the purported head of Abu Musab al-Zarqawi's terror cell in the northern city.