Instead, he was being watched over by both the organization and also the officials. Unfortunately, he was more of a logistic member who didn't get many mission and the missions given to him was mostly related to technology matters. So they couldn't really get any evidences.
In the end, he died because of old age and his body function deteriorated.
The previous Scorpio died around four years ago and ever since then, the codename has been left empty.
This was because they wanted to select a suitable logistic member again.
But the people around Scorpio were detained one after another because of various reasons. It was clear that Scorpio's identity has been leaked out and they couldn't follow with this line.
So they had to pick someone else.
There might be some debate among the higher ups because they delayed giving out the codename until Arya appeared.
