No drugs or paraphernalia were found in Amy Winehouse's Camden home in north London, a police source told People magazine, and the cause of death is still unknown.
There have been speculations that the British singer died because of a drug and alcohol binge.
The UK's Mirror has reported that the 27-year-old five-time Grammy Award winner died following a drugs and booze binge.
The Mirror reported that a friend of the singer claimed that "[Amy] has spent the last seven days on a massive bender and people were saying she's going to drink herself to death."
Fox News reported that the British tabloid The People reported that Amy Winehouse was seen buying drugs from a well-known dealer, and it included cocaine, ecstasy, heroin, and ketamine, an animal tranquilizer that is taken illegally for its psychedelic effects.
However, police have yet to officially say what exactly the cause of death is and have said the singer's death is "unexplained."
An autopsy is scheduled for Monday and should give more insight into the singer's cause of death.
"Inquiries continue into the circumstances of the death," London's Metropolitan Police said in a statement Sunday according to The Hollywood Reporter. Police have also said "there here have been no arrests in connection with the incident."
It is also being reported that Amy Winehouse could have been dead for about six hours before her body was found on Saturday. A security guard found her body in bed around 4 p.m., according to The Sun.
The Sun article stated that the Amy Winehouse spoke to her security team around 10 a.m. on Saturday for the last time, and told them she was going to sleep. When she was found, rigor mortis had already set in.
Furthermore, the singer got a clean bill of health from her doctor who examined her on Friday evening. The Suns said Amy Winehouse was having regular check-ups because her drink and drug battles had left her frail.
"The doctor was happy with her condition. When he left on Friday night he had no concerns. Less than 24 hours later she was found dead," a source told the paper.
Amy Winehouse also had lunch with mom Janis the day before her death. According to her mother, Amy "seemed weary, but that wasn't particularly unusual as she always went to bed late. Her passing so suddenly still hasn't hit me."
Janis also said her death was "Only a matter of time."
The family released a statement a day after her death stating that it "been left bereft by the loss of Amy, a wonderful daughter, sister, niece. She leaves a gaping hole in our lives."
They've also asked for privacy at this time.
Amy Winehouse debuted in 2003 with the debut album Frank, which brought her critical success in the UK. But it wasn't until 2006 that the world came to known the soulful singer when she released the album Back to Black. That album got six Grammy Award nominations and the singer took home five of them.
She is best known for the songs Rahab, Stronger Than Me, and Love is a Losing Game.
Amy Winehouse struggled publicly with her drugs and alcohol addictions, and her death still comes as a shock to her fans and colleagues in the entertainment world.
Many of them have shown their condolences by creating shrines outside the singer's London apartment, leaving touching messages and photo tributes.