WASHINGTON -- The source and destination of illicit weapons seized over the weekend in Arabian waters are still under investigation, a Pentagon spokesman said Monday, adding the US does not exclude North Korea from its list of potential destinations.

The US Navy earlier said it has seized thousands of illicit weapons from a stateless dhow in international waters in the North Arabian Sea.

John Kirby, the Department of Defense spokesman, said the seized weapons included Russian-made anti-tank missiles.

"You mean as the potential destination? No," he said when asked if North Korea could be excluded from the line of investigation for the intended destination of the seized weapons.

Kirby said the North, or apparently any other country for that matter, could not be excluded as a potential destination because the US investigation has yet to be completed.

"As I said at the beginning, the final destination of this material is unknown. That's why we're investigating it," he said.

The US has long accused North Korea of proliferating conventional weapons.

"North Korea remains an arms supplier to a small group of countries, including Iran, Syria and Uganda," Lt. Gen. Scott Berrier, director of the US Defense Intelligence Agency, said in a written testimony submitted to the Senate Armed Services Committee late last month.

When asked if the new US policy toward North Korea may affect joint military exercises of South Korean and US forces, the Pentagon spokesman said the US remains committed to the defense of South Korea and necessary training to that end.

"The approach that the administration wants to take is, in a phased approach, to try to find diplomatic space to get to the denuclearization of North Korea," he said. "Of course, here at the Defense Department we support that effort wholeheartedly.

"That said, the secretary also takes very seriously our security commitments to our treaty allies, the Republic of Korea, and we have an obligation -- working with them to make sure that forces on that peninsula, across all realms of service, are trained and ready." (Yonhap)