The Wall Street Journal is the first to report that Special Counsel Robert Mueller has recently impaneled a grand jury in the Trump-Putin campaign investigation (separate from the Gen. Michael Flynn grand jury) indicating that the investigation has entered a new phase. Special Counsel Robert Mueller Impanels Washington Grand Jury in Russia Probe (pay firewall article):
Special Counsel Robert Mueller has impaneled a grand jury in Washington to investigate Russia’s interference in the 2016 elections, a sign that his inquiry is growing in intensity and entering a new phase, according to people familiar with the matter.
The grand jury, which began its work in recent weeks, signals that Mr. Mueller’s inquiry will likely continue for months.
The Washington Post picks up the Journal’s report, Special Counsel Mueller using grand jury in federal court in Washington as part of Russia investigation:
Special Counsel Robert Mueller began using a grand jury in federal court in Washington several weeks ago as part of his probe into possible coordination between the Kremlin and the Trump campaign, according to two people familiar with the investigation.
The development is a sign that investigators continue to aggressively gather evidence in the case.