Britney Spears' children, the fruit of her relationship with Kevin Federline, would have cut all contact with the singer because they fear her, said the artist's ex-husband.

In a recent interview with British journalist Piers Morgan on Uncensored, Federline said that her sons Sean Preston and Jayden decided to stop seeing their mother because of the singer's alleged erratic behavior.

“Jayden, who is my youngest son, is now 19 years old, has been there several times over the last year and has stopped seeing her in the last few months because of the situation,” said Federline, who assured that his children are worried about their mother.

When asked about Britney Spears’ behavior that led his children to not want to see her, the former dancer said that that is not something that is for him to tell, but rather for his children.

“That is not my story to tell. That is the story that my children can tell if they want to,” he said.

Federline only said that the situation is so serious that one of his children called him terrified to tell him that he feared for his mother’s life. “It was so shocking that one of my sons came to me and called me and said, ‘I don’t know what to do. I’m scared Mommy’s going to die.’” Kevin Federline recently released his memoir, You Thought You Knew, in which he makes controversial claims about his life with Britney Spears. In his memoir, Federline recounts sensitive and disturbing episodes, including Britney’s alleged erratic behavior during their marriage and even an incident where she appeared in the boys’ bedroom doorway holding a knife. As of this writing, Britney Spears has not issued a direct public response to Federline’s claims.