Elon Musk has responded after author Ashley St Clair claimed to have given birth to his 13th child. St Clair revealed on social media that her five-month-old is Musk’s, stating she had kept it private for the child’s safety. She urged the media to respect their privacy.

Musk reacted by sharing a screenshot of the tweet, simply writing, “Whoa.” St Clair’s rep, Brian Glicklich, confirmed Musk and St Clair have been privately working on a co-parenting agreement but said tabloid interference disrupted the process.

St Clair hopes Musk will publicly acknowledge his role soon. If confirmed, she would be the fourth woman to have a child with him, adding to his known 12 children.