Saudi Arabia's Islamic Affairs Ministry is investigating 17 mosque imams in the capital Riyadh for **t using their Friday sermons to de**unce an al Qaeda attack this month, the English daily Arab News reported on Saturday. The conservative Islamic kingdom has kept a close eye on mosque sermons for evidence of militancy since last decade, when al Qaeda staged a ****** of attacks inside Saudi Arabia that killed hundreds. The authorities are worried that anger at the violence in Syria and Iraq, coupled with hardline teachings by some local religious leaders could inspire a new generation of militants to again attack domestic targets. Arab News cited Tawfiq al-Sudairi, an under-secretary at the Islamic Affairs Ministry, as saying the imams were under investigation "for allegedly failing to highlight the incident in their sermons".