Andrew Wheeler, the acting administrator of the Environmental Protection Agency, repeatedly engaged with inflammatory content on his personal Facebook and Twitter accounts over the past five years, including some in the past month.

The previously-unreported interactions include liking a racist image of former President Barack Obama and First Lady Michelle Obama on Facebook and retweeting an infamous “Pizzagate” conspiracy theorist.

The findings paint an embarrassing, if unsurprisingly partisan, picture of the 53-year-old former coal lobbyist and Republican aide. Wheeler has kept a significantly lower profile than his predecessor, Scott Pruitt, the disgraced agency chief whose resignation in July amid mounting scandals cleared the way for Wheeler’s promotion. The most incendiary interactions occurred before Wheeler, whose past social media activity has drummed up controversy before, became acting administrator.

In an email to HuffPost on Tuesday, Wheeler said he didn’t recall liking the image of the Obamas and clicked on tweets from conspiracy theorists without reviewing the source.

“Over the years, I have been a prolific social media user and liked and inadvertently liked countless social media posts,” Wheeler said. “Specifically, I do not remember the post depicting President Obama and the First Lady. As for some of the other posts, I agreed with the content and was unaware of the sources.”

American Bridge 21st Century, a Democratic political action committee, first uncovered the social media posts, which HuffPost reviewed.

In January 2013, Wheeler liked a photograph of the Obamas sitting at a sports game, depicted looking at a white person’s hand holding a banana. The image was posted by a page called Mia mamma è vergine, Italian for “My mom is a virgin,” which posts memes and videos.