Marcelo Gomes, a distinguished principal dancer with American Ballet Theatre, has resigned amid a formal investigation into an allegation of sexual misconduct, the Washington Post reports.

ABT board chairman Andrew F. Barth has released a statement specifying only that the "highly concerning" alleged incident occurred about eight years ago but “does not involve any current or former members of the ABT community, aside from Mr. Gomes, and did not occur in relation to his employment duties with the Company.”

A native of Brazil, Gomes, 38, celebrated 20 years with the prestigious dance company this past summer. His name has now been removed from all upcoming performances listed on ABT’s website.

"This is a time of reflection for Marcelo," says a spokeswoman for Gomes. "He is gratified and strengthened by the support he has received from family, friends and colleagues."

Gomes had also been creating a new work for Washington Ballet that artistic director Julie Kent says will proceed as planned in March.

The dancer came out publicly as gay in a 2003 cover story with The Advocate. His longtime partner, choreographer and dance teacher Nick Palmquist, left his wife for Gomes.

Anatomy of a Male Ballet Dancer, a new documentary about Gomes, is slated to open January 3, 2018, at Film Forum in New York.