Crime factor materials of 30 detainees, which were used during Gezi Park incidents in Istanbul\'s Taksim square, were exhibited to press on Wednesday.   4 guns, including 2 bluffs, 2 shotguns, gas masks, handcuffs, spray paints, gloves, balls, tear gas and blackjacks, obtained during searches in the suspicious individuals\' houses, were shown to press in Istanbul\'s police department building. Those who threw stones and molotov cocktails to both shopkeepers and police during the incidents were detained after they were confirmed through mobile electronic system integrations and security cameras of offices. 30 detainees\' processes who were previously taken into custody are going on.