Sen. Ted Cruz this week leaned into a long-running joke that paints him as a possible suspect behind the infamous Zodiac Killer murders in the late 1960s.

It was reported on Wednesday evening that the FBI had confirmed the identity of the serial killer to be Air Force Veteran Gary Francis Poste, who died in 2018.

"[T]his is absolutely true," Cruz quipped on Twitter while linking one of the news articles about the development.

His fellow GOP senator, Sen. Mike Lee, R-Utah, joined in on the joke as well. "Ted, does this finally exonerate you?" Lee wrote back.

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Ted Cruz

Sen. Ted Cruz resurfaced a popular internet meme about him being the Zodiac Killer

Cruz’s December 1970 birthdate makes it highly unlikely he could have been the real serial killer.

The internet meme appears to have originated in 2013, according to NPR, when a Twitter account called @RedPillAmerica shared a thought about one of Cruz’s speeches: "#CPAC Alert: Ted Cruz is speaking!! His speech is titled: 'This Is The Zodiac Speaking.'"

It gained serious traction in 2015 and 2016, around when Cruz declared his candidacy for president.

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Discourse over the 2016 GOP primary debates would often be punctuated with side-by-side images of Cruz and a composite drawing of the serial killer.

The senator has referenced the meme numerous times over the years. In 2018, he posted a Halloween message with a photo referencing the Zodiac Killer’s trademark coded notes.

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Zodiac killer sketch

Pictures of Cruz side-by-side with this composite image of the Zodiac Killer circulated online during the 2016 presidential election. (Getty Images)

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The meme grew so prominent that his wife, Heidi, was asked about it by Yahoo News while on the 2016 campaign trail, and she denied her husband being the suspect.

"Well, I’ve been married to him for 15 years, and I know pretty well who he is, so it doesn’t bother me at all. There’s a lot of garbage out there," she said at the time.