Report: Suspicious activity at N. Korea test site

South Korean and US intelligence officials have detected suspicious vehicle movements at a major North Korean missile test site, a news report said Sunday, amid lingering tensions over the country's weapons program. "Military intelligence officials have spotted movements by several large vehicles in the North's Gitdaeryeong area," Yonhap news agency said, citing an unnamed government official. The intelligence authorities did not rule out the possibility that the activity is part of North Korea's preparations for additional missile tests, Yonhap said.