At least some portion of the Scud missiles fired by the Yemen-based Houthis at Saudi Arabia may have been from North Korea, South Korea’s Yonhap News reported Wednesday, citing an unnamed South Korean intelligence official.

The Yonhap report does note that this official gave no details on how the South Korean intelligence community came to this conclusion, and analysts should be a little skeptical of these claims. Yemen’s strategic forces are fairly small, but likely contain mostly Soviet and Russian missiles. It is possible that some of the missiles in question were North Korean, but it is far from definite.