Owain Rhys Davies has died at 44, according to an Instagram post shared Sunday by his brother, Rhodri Davies. The Welsh actor was known to TV audiences for roles in “Twin Peaks: The Return” and “The OA,” and also built a long stage career in London’s West End.

Rhodri wrote that he and their father, Conway Davies, were sharing the news “with profound sadness,” calling the loss “devastating.”

What the family has said

In the Instagram statement, Rhodri said there are “still questions that remain unanswered regarding the circumstances of his death.” He added that the family understands Owain “passed suddenly, naturally, and peacefully.”