(KUNA) -- Unknown gunmen killed one Iraqi civilian and injured six others on Monday in al-Kazimeya north of the capital while court was in session for former Iraqi dictator Saddam Hussein and six of his accomplices. Iraqi security sources said gunmen opened fire in the afternoon on a crowd gathered in the Adan area which resulted in killing and injuring seven people.Meanwhile, Multi-National Forces (MNF) said in a statement today that its forces jointly with the Iraqi forces discovered large weapons and explosives caches in Mosul north of Iraq. The statement added the discovery operation came about when an Iraqi police patrolling in one of the districts in Mosul found the weapons cashes. In addition, the operation also resulted in the discovery of 3000 tons of explosive materials, along with mortar shells and anti-armor mines.