Veteran actor Jeffrey Tambor, who stars on Amazon’s acclaimed series “Transparent,” is the focus of an investigation by Amazon Studios after allegations of sexual harassment surfaced, Deadline reports.

Tambor has strongly denied the allegations.

“In its early stages, the probe primarily stems from claims by Tambor’s former assistant Van Barnes of implied inappropriate behavior on the part of the Emmy, Golden Globe and SAG Awards winner,” Deadline reports. “The investigation into the claims by the transgender Barnes, which she made online in a private Facebook post, began earlier this week, we hear.”

Tambor issued a statement to media outlets saying: “I am aware that a former disgruntled assistant of mine has made a private post implying that I had acted in an improper manner toward her. I adamantly and vehemently reject and deny any and all implication and allegation that I have ever engaged in any improper behavior toward this person or any other person I have ever worked with. I am appalled and distressed by this baseless allegation.”