U.S. troops killed six suspects and detained ten others Saturday in raids across central and northern Iraq, the military said. In one operation northeast of Samarra, U.S. soldiers killed two armed suspects in a house, the U.S. military said in a statement. Four other suspects were seen running into an adjacent building, the statement said. U.S. forces called for them to come out, but no one responded, so the Americans «engaged the armed men, killing four» of them, it said. Afterward, U.S. troops discovered that three of the suspects killed were wearing suicide vests at the time, the military said. A weapons cache and bomb-making materials were also found, it was quoted as saying by the Associated Press. U.S. aircraft then destroyed the two buildings because they were rendered «structurally unsafe,» the statement said. During the raid, three suspects were captured in two other locations in the same area, it said. In the Iraqi capital, U.S. soldiers captured six suspects in raids targeting Iraqis accused of helping foreign insurgents, the military said. One of the men was on the military's wanted list, it said. Meanwhile in Kirkuk, an oil-rich city 290 kilometers (180 miles) north of Baghdad, the military said its soldiers detained one man in another raid.