Amy Winehouse Amy Winehouse

An autopsy to determine Amy Winehouse's cause of death isn't expected until Monday, CNN reports.

"Inquiries continue into the circumstances of the death," police said in a statement. "At this early stage it is being treated as unexplained and there have been no arrests in connection with the incident."

Amy Winehouse Dead at 27

The 27-year-old singer, best known for her song "Rehab," was found dead Saturday in her London home. Although Winehouse had a longstanding history with drug abuse, police are making it clear that the cause of death is still unknown.

"I am aware of reports suggesting this death is the result of a suspected drugs overdose, but would like to re-emphasize that no post-mortem has yet been done and that it would be inappropriate to speculate on the cause of death," Metropolitan Police Superintendent Raj Kohli said. 

See other celebs who were gone too soon

On Sunday, Winehouse's management company Metropolis Music issued a statement. "We are trying to come to terms with the death of a dear friend and colleague, the most amazing artist and talent," it read. "We will always remember Amy as a vibrant, funny, caring young woman who made everyone around her feel welcome. We have lost a very special person, part of our family."