The mystery surrounding British socialite Peaches Geldof's death increased today, as a post-mortem examination yielded an inconclusive cause of death. Geldof passed away Monday, April 7 at the age of 25.

Officials found no suicide note or evidence of drugs in Geldof's home, and they are treating the death as "unexplained and sudden." The model and journalist is married to punk band S.C.U.M. frontman Thomas Cohen, and has two children, Astala, who is nearly two-years old, and Phaedra, who is nearly one-year old. Both boys have birthdays this month.

Geldof's final tweet was an Instagram photo of her as a baby, being held by her late mother, Paula Yates. The photo was captioned: "Me and my mum." Her Instagram account has since been deleted.

Yates died from a heroin overdose when Geldof was 11-years old.

An official cause of death and funeral arrangements are pending a toxicology report, which may take several weeks.

Geldof's father, Irish singer-songwriter Bob Geldof, and sisters released a statement regarding their tragic loss:

"Peaches has died. We are beyond pain," they wrote. "She was the wildest, funniest, cleverest, wittiest and the most bonkers of all of us. 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 Geldof began writing for Elle Magazine when she was 15 years old, and went on to write for The Telegraph and the Guardian. Last  month, Geldof became a columnist for Mother & Baby Magazine. An article published in the May issue described Geldof's love of motherhood.

"Before having two fat little cherubs under two who expect attention and military-esque devotion to their every need 24 hours a day, I lived a life of wanton wanderlust," Geldof wrote.

"I've achieved a sort of perfect balance. Right now life is good. And being a mum is the best part of it."