The author of an unauthorized biography of the late singer Aaliyah has denied claims that she promoted her book at the cemetery burial site, People magazine reports.

The allegations came from Aaliyah’s mother, Diane Haughton, who on Twitter accused an unnamed person of visiting Ferncliff Cemetery and Mausoleum in Hartsdale, New York.

“Due to the behavior of an individual that has been to Aaliyah’s resting place in order to promote a book, I have been forced to make a drastic change” at the cemetery, Haughton wrote, without specifying what that change might be.

Kathy Iandoli, author of the new Baby Girl: Better Known as Aaliyah, denied any untoward behavior on her part on Twitter, writing, “I did not promote my book outside of Aaliyah’s gravesite. That is offensive to even suggest. I have been told that fans have had my book there with them. Please no longer bring my book to Ferncliff. Apologies that fans can not visit Aaliyah’s resting place.”

 

Iandoli’s book drew headlines before its publication. The Daily Mail reported that the book contained allegations from a man who had been with Aaliyah in the hours before she died in a Bahamas plane crash. The man claimed that the singer had been given a sleeping pill, and was carried unconscious aboard the plane.

Baby Girl was published last week by Atria, almost 20 years after Aaliyah’s death.

Michael Schaub is a Texas-based journalist and regular contributor to NPR.