The coroner’s verdict on George Michael death only came three weeks ago.
Tests were ordered because an initial post-mortem examination was “inconclusive”.
Darren Salter, senior coroner for Oxfordshire, said the star had heart and liver disease.
Many of George Michael fans took to social media and online forums to pay their respects again on Wednesday when news of his funeral emerged.
While he had mostly stayed out of the limelight in his final years, the singer had been collaborating with Naughty Boy, and producer Nile Rodgers said he had visited Michael’s home two days before his death to work on a project.
George Michael – whose full name was Georgios Kyriacos Panayiotou – first came to fame in the 1980s as a member of Wham! alongside Andrew Ridgeley.
The pair’s pop hits won them thousands of fans before George Michael found solo success with hits including Faith and Careless Whisper. He had a total of seven UK number
one singles as a solo artist – including A Different Corner and Jesus to a Child – and the same number of chart-topping albums.
George Michael also collaborated with artists including Aretha Franklin and Elton John.
He had been seen at 12.30pm strolling near George’s pad in Regent’s Park, where he lives.
After being asked by the snapper if he was attending the service, Fadi raced indoors.
He then emerged an hour later in a dark suit and hopped into a black limo.
After paying his respects to George, he left the cemetery just before 4pm and returned home.
He said: “I can’t give you an answer, everything is being kept quiet. I really don’t know anything. Believe me. It’s all so strange.
“Nobody helps me, you know? My relationship was with George. It’s sad, and it’s not right.”But a source close to the family said: “Fadi was allowed to attend the service, but the family didn’t want him at the wake afterwards.
“It wouldn’t have been appropriate for him to attend. Emotions are still extremely high.”
Fadi was the last person to see George alive on Christmas Eve at the star’s home in Goring-on-Thames, Oxfordshire.
He says he slept in his car that night and found George dead in bed the next day.
Posts on Fadi’s Twitter account shortly after claimed the star had taken his own life. But the death was attributed to heart and liver problems, although results of toxicology tests that delayed the funeral were kept secret.
Security surrounded the cemetery in the run up to the service, with guards on the entrances and tarpaulin shielding the view through wrought iron gates.
George’s coffin was transported to the site at 6am to avoid attracting attention, and was driven to a grave alongside his mother, who died in 1997.
The source added: “This was a very intimate affair for only the very closest of George’s family and friends.
“Those friends who came have generally known George for many, many years — in some cases almost his entire life — and the gathering afterwards was hosted by his dad Kyriacos and his sisters Melanie and Yioda.
“His very closest friends, such as producer David Austin, Martin and Shirlie Kemp, and Andrew Ridgeley were there, but the family were keen to make sure it didn’t become a bit of a circus.
“George avoided all that fuss and his family like to keep things low-key. George had a reputation for being flamboyant and larger than life, but he was really quite shy and liked to stay out of the limelight as much as possible, especially in recent years.”
The private funeral service took place on Wednesday at Highgate Cemetery in north London. Michael’s publicity agency, Connie Filippello Publicity, said in a statement it was attended by family and close friends.
The family thanked his fans for their “many messages of love and support“ and asked for its privacy to be respected.
Karl Marx and authors George Eliot and Douglas Adams are among the famous people buried at Highgate.
A post-mortem investigation found that Michael died of natural causes as the result of heart disease and a fatty liver.
The former Wham! singer was found dead at his country home in Oxfordshire on 25 December at age 53.
The singer had battled health problems and drug addiction.
George Michael’s loved ones were able to pay their last respects to him yesterday – three months after the pop icon passed away.
But his long-term partner Fadi Fawaz did not attend the singer’s wake, with a security guard claiming he “wasn’t on the list.”
It’s understood Fadi had to gate-crash his superstar boyfriend’s funeral and was the last person to arrive at Highgate Cemetery, where he joined George’s closest friends and family members, including Wham! bandmate Andrew Ridgeley.
Wham!’s backing singers Pepsi DeMacque and Shirlie Holliman, as well as Spandau Ballet star Martin Kemp, also attended the small funeral at Highgate Cemetery, North London.
George was buried next to his beloved mum Lesley in a family plot.
His body was already inside the chapel of rest when the invited guests started to arrive in chauffeur driven limousines shortly before 2pm.
After an hour-long service, the coffin was taken in a hearse to the grave where the singer was laid to rest.
Mourners left the cemetery at around 4pm and headed to George’s home in Highgate for the wake hosted by his sister Melanie Panayiotou.
George’s former boyfriend Kenny Goss went to the funeral and the wake.
Fadi had previously been left furious by reports Kenny and George Michael rekindled their friendship shortly before his death.
Supermodel Kate Moss attended the wake, though she had not been at the funeral.
A statement from George’s spokesman said:
“Family and close friends gathered for the small, private ceremony to say goodbye to their beloved son, brother and friend.
“George Michael family would like to thank his fans across the world for their many messages of love and support.”