関かん係けい筋すじ

noun

relevant source; well-informed source; interested parties

Used in news reports and formal statements to refer to people or organizations with inside knowledge or a stake in a matter. Often translated as 'sources close to the matter' or 'informed circles'.

• 関かん係けい筋すじによると、来らい月げつにも新しん製せい品ひんが発はっ表ぴょうされる見み通とおしだ。

  According to informed sources, the new product is expected to be announced as early as next month.

• この情じょう報ほうは関かん係けい筋すじから得えたものです。

  This information was obtained from relevant sources.