Obviously, that somebody also has strong connections with the media.
What isn't so clear is the motivation. Offhand, I can think of three possibilities.
1. Bureaucracy: an attempt to cover-up one's own (or one's own agency's) mistaken assessments.
2. Politics: an attempt to undermine what would constitute clear public justification for the Iraq war.
3. Treason: a mole who was on Saddam's payroll. Or al-Qaeda's...
The temptation is to believe the former. But the possibility (and danger) of the latter can't be ignored.
That the middle one is even plausible says volumes...