This news doesn’t surprise me considering that North Korea has already been linked to providing tunnels for Iran’s nuclear program:

North Korea has reportedly imparted knowledge of its underground-tunneling techniques to Burma.

Swedish journalist Bertil Lintner, a specialist on Burma, claimed in a contribution to Yale University’s online journal that North Korean technicians had helped the Burmese military build underground facilities starting in 2003.

He also revealed two pictures of alleged North Korean technicians coming out of Burma’s state guesthouse.

The Swedish journalist noted that an underground facility abandoned by Hezbollah forces in southern Lebanon in 2006 is quite similar to North Korean-made underground tunnels in the Demilitarized Zone on the Korean Peninsula.  [KBS Global]

Let’s not forget North Korea’s work constructing a nuclear reactor for the Syrians or suspected links to building nuclear warheads for the Iranians either.