US troops killed 13 suspected insurgents in a raid south of Baghdad early Friday, the military said. Troops were acting on intelligence reports saying a suspect with links to al-Qaida in Iraq was in the building in Mahmoudiya, about 30 kilometers south of Baghdad, the military said. The building was surrounded and stormed after those inside did not respond to demands to surrender, the military said in a statement e-mailed to media. Five people were killed inside the building, including one man wearing a vest rigged with explosives, while eight other men who fled were gunned down by troops on the ground and planes or helicopters circling above, the report said. Several of those killed appeared to have been foreign fighters from outside Iraq, the report said. The report did not say if there were any American casualties in the raid. Explosives, hand grenades and other explosive-rigged vests used by suicide bombers, were discovered in a search of the area, the report said.