Kevin Federline has expressed concerns regarding his sons’ relationship with their mother, Britney Spears, stating that the boys have decided to distance themselves from her.

In an interview with Piers Morgan on the program “Uncensored,” Federline revealed that his son Sean Preston, now 20, visited Spears once this year but chose not to return after witnessing something unsettling.

Federline also mentioned his younger son, Jayden, who is 19. Jayden had been visiting his mother several times over the past year but has ceased contact in recent months due to ongoing issues.

According to Federline, both sons feel “terrified” and “concerned about their mother,” feeling helpless in light of the unfolding circumstances.

When probed about why Spears’ sons are reluctant to spend time with her and what they might have experienced, Federline responded, “That’s not my story to tell.”

“That’s my sons’ story to tell if they decide to. I mean, the things that they’ve seen are shocking, right?” the former backup dancer alleged.

“So shocking that one of my sons came to me and called me and was like, ‘I don’t know what to do. I’m afraid Mom is going to die.’”

A rep for Spears did not immediately return Page Six’s request for comment.

Federline, 47, dropped his memoir, “You Thought You Knew,” on Tuesday. In the days leading up to the book’s release, Spears’ former husband released excerpts from the book claiming a litany of alleged wrongdoings.

Federline claimed in the book that Spears allegedly did cocaine while still breastfeeding, punched Preston in the face and once wished her sons dead.

Federline also claimed Spears, 43, watched her sons sleeping with a “knife in her hand.”

He also details her “bizarre” behavior before famously shaving her head in 2007, alleges that she cheated on him with a female backup dancer, and shares the “final straw” moments that led to the collapse of their marriage, which lasted from 2004 to 2007.

A rep for Spears previously dismissed the salacious memoir as a cash grab.

“With news from Kevin’s book breaking, once again, he and others are profiting off her,” the rep told Page Six in a statement earlier this month.

They added, “Sadly, it comes after child support has ended with Kevin.”

The “Toxic” hitmaker, for her part, took to social media multiple times with recriminations against her former husband.

“The constant gaslighting from ex-husband is extremely hurtful and exhausting,” she wrote via X on Oct. 15. “I have always pleaded and screamed to have a life with my boys.”

She also seemingly confirmed that her boys had stopped visits with her, writing that “one son” had seen her for “45 min in the past year” and the other had only “4 visits” with her “in the past 5 years.”

One day later, on Oct. 16, she again took to X to blast Federline for “attacking” her with the memoir.

“Why is HE SO ANGRY … and what’s scary is he’s convincing,” she added. “It literally blows my mind the moments he stops before he cries are you f–king serious.”

The ongoing pressure has seemingly affected the legendary songstress — she was recently spotted driving erratically during a night out with a mystery pal in footage obtained by the Daily Mail.