At the opening of the inquest into the death of Peaches Geldof, Detective Chief Inspector Paul Fotheringham, of the Kent and Essex Serious Crime Directorate, said a post-mortem examination was inconclusive, prompting further tests.
But he told the hearing: "Recent use of heroin and the levels identified were likely to have played a role in her death."
Her mother, TV presenter and writer Paula Yates, died from an accidental heroin overdose at her London home 14 years ago.
More top news
A chilly night with widespread frost and fog in some parts of the UK which will be slow to lift in the morning.
Uptown Funk, his collaboration with Bruno Mars, reached number one in the charts again this evening.
ITV News spoke to Nick Channing-Williams who described the freezing conditions on board the car ferry that caught fire earlier today.