Jeffrey Tambor is under investigation.
Amazon confirmed to ET on Friday that an investigation of the Transparent star has been initiated following reported allegations of sexual misconduct by a former assistant.
ET has reached out to Tambor's rep.
MORE: Jeffrey Tambor Says Transgender Military Ban Makes 'Transparent' More Important Than Ever
In a statement to Deadline, the actor denied the allegations, calling them "baseless," 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," Tambor added. "I am appalled and distressed by this baseless allegation.”
MORE: Jeffrey Tambor Explains Impact of His 'Transparent' Character: 'It's No Doubt Changed My Life'
The fourth season of Transparent premiered on Sept. 22 on Amazon. The drama series was renewed for a fifth season in August.