A spokesman for the conservative news organization Breitbart said on Thursday it has been years since the company had any ties to a right-wing filmmaker who wrote a tweet calling for the mass killing of Muslims.

The author of the tweet was Patrick Dollard, who describes himself on his Twitter account as a “contributing journalist at Andrew Breitbart’s Big Government, Big Peace, Big Hollywood.”

“If there is even one more act of Muslim terrorism, it is then time for Americans to start slaughtering Muslims in the streets, all of them,” Dollard wrote Wednesday.

As of Thursday morning, it had been retweeted more than 500 times.

Kurt Bardella, a spokesperson for Breitbart, told TPM that Dollard is not in fact with the outlet.

“He hasn’t contributed anything to Breitbart in three years, and he never at any point was a paid contributor,” Bardella said.

Bardella lamented that Dollard’s erroneous Twitter biography is “sadly not in my control.”

“I’ve had this conversation a few times, as you can imagine,” Bardella added.

Dollard’s Twitter feed is filled with hyper-aggressive, right-wing rhetoric, but he later claimed that the Fort Hood shooting wasn’t the impetus for his tweet about “slaughtering Muslims.”

He protested after Mediate’s Andrew Kirell wrote that the tweet was a reaction to the shooting and even suggested that he might take legal action for the “libelous” headline.

@AndrewKirell Claiming that tweet had anything to do with Fort Hood is a complete lie that you just made up, worst form of journalism. — Patrick Dollard (@PatDollard) April 3, 2014

@AndrewKirell I see your standing by your completely fact-free, completely made-up headline, bolstered by wishful thinking only, no evidence — Patrick Dollard (@PatDollard) April 3, 2014

@AndrewKirell You’re about some hard legal lessons.The headline is libelous, especially in context of our prior personal disputes. @Mediaite — Patrick Dollard (@PatDollard) April 3, 2014

He then tweeted this bizarre reaction to Obama’s statement on the shooting: