In recent interviews with more than half a dozen sources who have worked with Trump’s top aide, Corey Lewandowski, the strategist was accused of pushing a CNN reporter who tried to ask the candidate a question; physically confronting an aide for a rival campaign in a post-debate spin room; publicly shouting threats over the phone at a restaurant; making sexual comments about female journalists; and calling up women in the campaign press corps late at night to make unwanted romantic advances.

Asked Monday for comment on these allegations, Lewandowski emailed, “Your story is factually inaccurate.” When BuzzFeed news asked him to clarify which portions of the story he was challenging, he wrote, “Be sure before you accuse me of something it’s accurate. And, in these instances you are wrong.”

These new details about Lewandowski’s conduct come at a fraught moment for the Trump campaign, as the billionaire fights tooth and nail to clinch the nomination amid escalating violence at his rallies and increased press scrutiny of what appears to be a toxic inner-circle.