Well, as LGF points out in the original threads updates, the IP may be from a Reuters router (say that three times fast), and may be various Reuters personnel reading the particular pages through the same router connected to their Local Area Network. The mention that different clients/etc. are being used would tend to support that.
True.
But it still is extremely fishy.
Like the perp is looking to see what other evidence might turn up.
"Acting Guilty" is how they are acting.