Kent police said that toxicology tests confirmed there was evidence of recent heroin use by Peaches Geldof.
The drug played a role in her death, an inquest in Gravesend, Kent, has been told.
Her husband Tom Cohen found his wife in the couple's spare bedroom slumped on the bed, the inquest heard.
Friends and family she had called in the last few hours before her death said she was her normal, happy self and had been making plans for a family outing in the coming days.
More top news
The Foreign Secretary said "good connections" were important, and suggested the Channel Tunnel might simply be "a first step."
When Arunachalam Muruganatham discovered his wife collecting filthy rags and newspapers to use during her period he felt compelled to act.
A plane which skidded off a runway and down a steep embankment in Turkey has been recovered as investigations get underway.