Austin-based right-wing conspiracy theorist Alex Jones filed suit Wednesday against the liberal YouTube show The Young Turks and U.S. House candidate Brianna Wu, accusing them of defamation.

Lawyers for the families of children and adults killed at Sandy Hook Elementary School — who are suing Jones for defamation after he suggested for years that the school shooting that killed 26 people was a hoax — disclosed in June that child pornography was found in electronic files sent to them by the Infowars host. Jones’ attorney said the child pornography was in emails sent to Jones that were never opened.

On June 17, The Young Turks account tweeted "Alex Jones Sent Child Porn To Sandy Hook Parents" and linked to a YouTube video that has since been taken down. Robert Barnes, who is representing Jones in the suit, replied to the tweet, saying, "This is libel. ... Retract & apologize, or get sued."

The same day, Wu tweeted a link to news coverage of the allegations and said, "This is shocking, even by Alex Jones standards. He didn’t just send child porn to the #SandyHook families, he threatened to murder them on the air." Barnes also responded to Wu's tweet, threatening a libel lawsuit.

Wu unsuccessfully ran in 2018 for a Massachusetts seat in the U.S. House and has begun a second campaign in the 2020 election.

Jones suit says that "hackers and cybercriminals" tried to plant child porn on Jones' computer "by using terms in the emails that had been ordered produced in court-ordered discovery."

"Once uncovered, the FBI cleared Jones and his employer," the suit says.

The Young Turks channel did not immediately respond to a request for comment, but Wu sent the following statement:

"I can’t comment on the legal issues of the case until I have legal representation, but if the Sandy Hook parents were brave enough to stand against Alex Jones, I have no doubt I can too," she said.