"Сшито нитками того же цвета" must be an allusion to "шито белыми нитками", which could be rendered into English in different ways:
- to be too obvious, or too thin
- to be trumped up
- to be easily seen through, etc.

Since "кроить" and "шить" of the source refer to different parts of the same process, I wanted to offer a version that would more or less reflect this, but alas )) Mine is neither too idiomatic nor catchy, even if still workable.

They're probably saying the police made a habit of framing innocent people, and the evidence in this new case will also be fabricated, as always.