North Korea built a new underground uranium enrichment facility in Tongchang, North Pyongan Province in 2006, separately from the existing one at Yongbyon in the same province, Liberty Forward Party lawmaker Park Sun-young claimed Wednesday.

Park said she had the information from a North Korean Army lieutenant colonel she only identified as Lee (52), who she claimed supervised security when the regime built the new facility.

"Construction began in 2001 and was completed in 2006," Park said. "After a test run in 2007, it began extracting enriched uranium in 2009."

"The Yongbyon facility is an empty structure that was built in preparation for an international inspection, but the new facility in Tongchang is the real uranium enrichment facility," she said. She explained that this is a different place again from the Tongchang-ri missile test range in the same province.

A glass factory near the Tongchang nuclear facility which leader Kim Jong-il and his son Jong-un for mysterious reasons visited three times last December and January, in fact produces nuclear weapons delivery vehicles, she claimed. "There's a uranium refinery under Mt. Chonma near the factory," she added.

Prime Minister Kim Hwang-sik declined to comment, saying the matter "is an intelligence concern."