Elon Musk, who has long touted claims about the world’s supposed depopulation crisis, had another child with an executive at his brain implant company Neuralink, according to a report from Bloomberg. Neuralink director Shivon Zilis reportedly had the child with Musk earlier this year.

Musk already has twins with Zilis, which Business Insider discovered in 2022 after digging up a court document. He has three children with the musician Grimes and six children from previous relationships, making for a total of 12 that we know of. On Thursday, Musk reposted a chart that claims Europe is suffering from a “fertility crisis,” saying “civilization may end with a bang or with a whimper (in adult diapers).”

As noted by Bloomberg, Musk has repeated that line several times in the past, including during a 2022 interview with Tucker Carlson and again during an interview at the Milken Institute conference in May. He told Carlson “a collapsing birth rate is the biggest danger civilization faces, by far.” In 2021, Musk’s nonprofit organization donated $10 million to the University of Austin to fund the Population Wellbeing Initiative, a research group that studies the human population.

The revelation also follows multiple reports alleging inappropriate conduct from Musk in the workplace and with subordinates. A recent report from The Wall Street Journal said Musk had a sexual relationship with a former SpaceX intern who later became one of the company’s executives. Another employee says she refused Musk’s requests to have children with him several times, according to the Journal.

Last week, eight former SpaceX engineers filed a lawsuit against Musk that claims the billionaire “knowingly and purposefully created an unwelcome hostile work environment based upon his conduct of interjecting into the workplace vile sexual photographs, memes, and commentary that demeaned women and/or the LGBTQ+ community.” The complaint echoes past allegations of discrimination and sexual harassment at SpaceX, including an incident where Musk allegedly propositioned a flight attendant for sex.