A new biography of Elon Musk reportedly contains a disturbing anecdote from pop star Grimes about the billionaires behavior during the birth of one of their children.

In an excerpt from Walter Isaacsons book Elon Musk shared by People , the Oblivion singer reportedly told the author that Musk took a photo of her as she was having a cesarean section and sent it to her friends, brothers and father.

He was just clueless about why Id be upset, she told Isaacson, according to People.

Representatives for Grimes and Musk did not immediately respond to HuffPosts requests for comment.

Isaacson shadowed the SpaceX and Tesla mogul for three years to write the biography, but has reportedly since walked back a major claim regarding Musks use of Starlink satellites amid Russia s ongoing invasion of Ukraine .

Isaacson previously wrote the definitive biography of late Apple founder Steve Jobs .

The author revealed elsewhere in the biography that Musk and Grimes secretly welcomed a third child , named Techno Mechanicus. The alleged midbirth photograph was chronicled in a section about their first son, X A-Xii , however, whom the parents reportedly call X.

The two reportedly met in 2018 after chatting on Twitter, which Musk acquired in 2022 for $44 billion and renamed X. According to another excerpt from Isaacsons book, Musk quizzed Grimes on The Lord of the Rings and showed off his Tesla on their first dates.