According to CNN Grand Jury subpoenas have been issued to some of  Gen. Flynn’s associates,

Federal prosecutors have issued grand jury subpoenas to associates of former National Security Advisor Michael Flynn seeking business records, as part of the ongoing probe of Russian meddling in last year’s election, according to people familiar with the matter. CNN learned of the subpoenas hours before President Donald Trump fired FBI director James Comey.

As more news on this comes out we will continue our coverage.

Report: Obama politically assassinated General Flynn over “Iran Deal”