Maine progressive Senate candidate Graham Platner questioned whether the mass-killing of Armenians by the Ottoman Empire in the early 20th century “was in fact genocide” in a now-deleted 2016 Reddit comment.

The revelation of the post, first by the Washington Free Beacon on Friday, came amid national scrutiny into Platner’s past comments on social media. In other posts, Platner mocked an American soldier shot four times during a Taliban firefight as a “fat a**” who “didn’t deserve to live” and recalled his experience masturbating in a public toilet while deployed to Afghanistan.