Fired US Attorney Preet Bharara was investigating a key member of President Trump’s cabinet, a new report Friday revealed.

Bharara was looking into allegations that Tom Price, the health and human services secretary and the administration’s point man on efforts to repeal and replace ObamaCare, improperly traded health care stocks while he was a member of the House of Representatives, ProPublica reported.

Price maintained that he broke no laws when he traded health care stocks even as he was involved in legislation relevant to the health care sector. He traded over $300,000 worth of shares of relevant companies during a four-year period in the House.

The issue played a significant role in Price’s confirmation process, and he was asked about it numerous times during his Senate hearing.

The revelation that Bharara was investigating Price comes as many were surprised the US attorney from the Southern District of New York was not retained by the Trump administration.

The then-president-elect met with Bharara after the election and during the transition period, when Trump reportedly asked him to stay on during his administration.

But last week, Attorney General Jeff Sessions notified all leftover federal prosecutors appointed by President Obama that they would be let go.

Bharara, however, refused to go and was fired by the Trump administration.