People who saw George Michael in the days before he died are being spoken to by detectives investigating the circumstances of the star's death.
The 53-year-old was found at his home in Goring-on-Thames, Oxfordshire.
After news of the Faith singer's death broke, his partner Fadi Fawaz revealed he found the star dead when he arrived to wake him ahead of a planned Christmas Day lunch.
It is understood toxicology tests could take up to eight weeks, after a post-mortem examination on December 29 proved "inconclusive".
Michael's death is being treated as " unexplained but non-suspicious", and police confirmed it is not being investigated by their Major Crime Unit, which looks at crimes including murder, manslaughter and rape.
In a statement Thames Valley Police said: "Contrary to media reports today this is not a Thames Valley Police Major Crime investigation.
"As part of Thames Valley Police's investigation on behalf of Oxfordshire Coroner into this unexplained but non-suspicious death, officers are establishing facts which includes taking statements.
"This is standard practice in cases such as this to allow the coroner to determine the circumstances of the death."