Facebook CEO Mark Zuckerberg quietly contacted South Bend, Indiana, Mayor Pete Buttigieg’s campaign manager to recommend multiple people for staff positions on the campaign.

Shortly after the launch of Buttigieg’s candidacy, Zuckerberg, 35, and his wife, Priscilla Chan, sent multiple emails to campaign manager Mike Schmuhl recommending individuals he might want to hire, according to Bloomberg.

Two of the names sent out now work on Buttigieg’s staff. Eric Mayefsky works as a senior digital analytics adviser, and Nina Wornhoff is an organizing data manager.

Buttigieg campaign spokesman Chris Meagher confirmed the emails and hires.

“From the CNN Town hall in March to our launch a month later, we literally got 7,000 resumes,” Meagher said. “I think that he [Zuckerberg] thought Eric would be a good staff hire with a lot of experience and same with Nina.”

“Mark and Priscilla have not decided who to support for president,” he said.

Mayefsky was the director of data science at Quora, a question-and-answer website launched by former Facebook employees. He also worked for Facebook for four years, beginning in 2010.

Wornhoff worked at the Chan Zuckerberg Initiative as a machine learning engineer and has also worked in democratic politics in Buttigieg’s home state of Indiana.

Buttigieg, 37, and Zuckerberg overlapped during their time at Harvard University. The South Bend, Indiana, mayor was also one of the first 300 users on Facebook, although the two only met in person years later.

A handful of high-ranking executives at Facebook have also donated to the Buttigieg campaign. Zuckerberg was recorded during an open meeting with Facebook employees discussing the issues that would come if Massachusetts Sen. Elizabeth Warren is elected president. He said that the company might have to sue the government if she wins in 2020.

“If she gets elected president, then I would bet that we will have a legal challenge, and I would bet that we will win the legal challenge,” Zuckerberg said. “And does that still suck for us? Yeah. I mean, I don’t want to have a major lawsuit against our own government.”

“But look, at the end of the day, if someone’s going to try to threaten something that existential, you go to the mat and you fight,” he added.

Warren has been a vocal opponent of big tech and has said she is in favor of breaking up companies such as Facebook.

Zuckerberg is slated to testify about his company Wednesday before the House Financial Services Committee.

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