DUBAI, May 3 (Reuters) - The self-styled al Qaeda-led Islamic State in Iraq denied on Thursday that its leader Abu Omar al-Baghdadi was killed, but said its spokesman was "martyred" in a clash with the "enemies of God". "We assure the nation that our leader ... Abu Omar al-Baghdadi, may God save him, is basking in the blessings of God among his kin in the Islamic State in Iraq," it said in a statement posted on an Web site used by insurgent groups. Iraq's Interior Ministry said earlier that Baghdadi, the leader of the self-styled Islamic State in Iraq, a militant al Qaeda-led group, had been killed north of Baghdad. The group said the person killed was its spokesman.