Thames Valley Police carried out the investigation but the results didn't bring any conclusion.
George Michael, born Georgios Kyriacos Panayiotou, shot to superstardom during the 1980s and 1990s.
As one of the world's best-selling music artists, Michael has sold more than 100 million records worldwide and his 1987 debut solo album, Faith, has sold more than 20 million copies.
Michael has won numerous music awards throughout his 30-year career, including three Brit Awards and two Grammy Awards. As of 2014, he had notched up six UK number one singles and four of his five studio albums have also reached the top spot.
Fadi Fawaz picked an unreleased song to honour the late singer.
The singer lost his mother, Lesley in 1997 following a battle with cancer.
This amazing trio - plus Eric Clapton on guitar - did a rendition of 'Every Time You Go Away'.
Celebrating the incredible life of George Michael (1963-2016) with some little-known facts.
With the sad news of the singer's death, we look at some of the reflections he shared on his life and experiences.
The ex-Wham singer and British music icon has passed away "peacefully".
The star is said to be spending time with his ex-partner Kenny Goss, whom he was with for more than a decade.
More gorgeous models lip-syncing to this George Michael classic.
A whole list of stars are being lined up for 'Freedom: George Michael'.
Can you help George Michael?
George Michael: Top Downloads
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