Police in Kent, England, said on Wednesday that the autopsy of Peaches Geldof was inconclusive, pending the results of the toxicology analysis. The results of that report could take several weeks.
Geldof, the 25-year-old daughter of musician and political activist Bob Geldof, died on Monday. Kent police told NBC News in a statement that her death was "being treated as an unexplained and sudden death."
Her father confirmed the death in a statement. "We are beyond pain. She was the wildest, funniest, cleverest, wittiest and the most bonkers of us all," he said. "Writing 'was' destroys me afresh. What a beautiful child. How is this possible that we will not see her again? How is that bearable?"
Peaches was the second daughter of the musician and Paula Yates. The 25-year-old was still a teen when she started writing for British publications The Daily Telegraph and The Guardian. In 2004, she started writing for teen fashion and beauty magazine Elle Girl. She was also a TV presenter and model.
Geldof is survived by her husband Tom Cohen, sons Astala and Phaedra, father, sisters Fifi Trixiebelle and Pixie, and half-sister Tiger Lily.
Sister Fifi remembered Peaches on social media Tuesday, sharing a photo of the two together with the caption, "My beautiful baby sister ... Gone but never forgotten. I love you, Peaches x."