from kuwait city, mohammed jemjun reports. >> a suicide attack at a shia mask during the muslim holyleft dozens dead and hundreds wounded. >> pictures have been shown of the suicide coward that walked into the place of prayer today wearing the same robes that i'm wearing now it's very difficult to be able to stop that type of activity. we are investing or we will be investing in metal detectors and the like. but even that can be overcome with the use of different types of technologies. >> reporter: this is the third such attack of its kind within a relatively secure gulf arab nation in recent weeks. suicide bombers killed several in saudi arabia on consecutive fridays. now, kuwait. where sunni and shia have been able to coexist relatively harmoniously. the country's amir called for national unity. security officials here have been placed on heightened alert and numerous officials have vowed to do whatever is necessary to ensure kuwait and kuwaitis are protected. reassurances that were taken to heart. by day's end a remarkable delay of solidarity. shia and sunni side by side in are wo