The Justice Department special counsel investigating Russian election interference will also look into former national security adviser Michael Flynn's lobbying work for Turkey, according to Reuters.

Robert Mueller’s probe will look into the grand jury investigation into Flynn’s paid work lobbying for a Turkish businessman, the report said. A Virginia grand jury has issued subpoenas to business associates of Flynn for documents, bank records and communications involving the lobbying work.

Flynn’s lobbying work for Turkey has come under scrutiny in recent weeks. McClatchy reported earlier this month that during the presidential transition, Flynn pushed to delay an Islamic State attack plan that Turkey opposed.

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The former national security adviser, who is under investigation for lobbying for Turkey during the presidential campaign without declaring it, admitted earlier this year that he received over $500,000 in payment from the Turkish government.

Earlier this month, Flynn declined a Senate Intelligence Committee subpoena and invoked his Fifth Amendment rights. But last week Flynn announced he would comply with the committee's subpoena and turn over documents from his businesses.

He had previously offered to testify before the House and Senate intelligence committees in exchange for immunity, but neither committee accepted his offer.

Flynn resigned from his post after it was revealed he discussed U.S. sanctions with Russia's U.S. ambassador before Trump took office and misled top administration officials, including Vice President Mike Pence Michael (Mike) Richard PencePence vows for law and order everywhere Trump met with chants of protest as he pays respects to Ruth Bader Ginsburg The Hill's 12:30 Report: Ginsburg lies in repose MORE, about the nature of the talks.