George Michael Cause of Death: Initial Autopsy "Inconclusive," Police Say

George Michael - Photofest - H 2016

The singer's death on Christmas Day is being treated as "unexplained but not suspicious."

Police say an initial autopsy of George Michael has been "inconclusive" and further tests must now be carried out to establish a cause of death.

"A Post Mortem examination was carried out yesterday as part of the investigation into the death of George Michael," said Thames Valley Police press officer Hannah Jones in a statement released Friday morning. "The cause of death is inconclusive and further tests will now be carried out. The results of these tests are unlikely to be known for several weeks."

Michael's death on Christmas Day is being treated as "unexplained but not suspicious," an indication that police found no evidence of foul play. 

The 53-year-old's manager Michael Lippma said the singer died of apparent heart failure at his country home on Dec. 25. 

The English singer, songwriter and record producer who rose to fame with the group Wham! in the 1980s, was confirmed deceased at the scene when Thames Valley Police arrived at his home. His partner, Fadi Fawaz, said he was the one who found Michael when the pair had planned to meet for Christmas lunch and he couldn't reach the singer.

"I went round there to wake him up and he was just gone, lying peacefully in bed," he said. Adding, "We don't know what happened yet."