In the letter announcing his former FBI director’s termination last month, President Donald Trump went out of his way to thank James Comey for telling him “on three separate occasions” that he was not under investigation.

But according to new reporting by the Washington Post—which says that Special Counsel Robert Mueller III is “interviewing senior intelligence officials as part of a widening probe that now includes an examination of whether President Trump attempted to obstruct justice”—Trump may no longer be able to cling to those previous assurances.

Citing officials familiar with the move, the Post notes how the widening of the federal probe to include the president’s conduct “marks a major turning point in the nearly year-old FBI investigation, which until recently focused on Russian meddling during the presidential campaign and on whether there was any coordination between the Trump campaign and the Kremlin.” The report, largely based on unnamed officials, says that Mueller’s team of investigators are also searching for any “evidence of possible financial crimes among Trump associates.”