A cause of death has not been revealed yet.
"Two postmortems were carried out. and we can confirm that there is no criminal suspicion in the death", confirmed the Royal Oman Police. The authorities also said the family are "completely devastated", reports People Magazine.
Avicii's Swedish fans have gathered in Stockholm, his hometown, on Saturday, April 21, to mourn the passing of the singer and to celebrate his music.
It was a decision that shook the electronic dance world, and one Tim Berling, then 27, did not take lightly.
Avicii thrilled clubgoers with his catchy hits, flashing lights and soulful collaborations.
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The worldwide pop star performed his well-known electronic dance songs around the world for feverish fans, with his popular sound sending him to the top of the charts and landing on USA radio.
His smash folktronica hit "Wake Me Up" created the blueprint for artists like The Chainsmokers and Major Lazer. He resigned from performing two years back to take a break from visiting and the debilitating way of life that accompanies it.
The Dom Tower in Utrecht also paid tribute by playing three of his songs through the church bells - Wake Me Up, Without You and Hey Brother.
"When I look back on my life, I think: whoa, did I do that?"
Avicii was nominated for two Grammy Awards, two MTV Europe Music Awards and one Billboard Music Award.
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"Yeah I was drinking way too much, partying in general way too much", he said.
"It was a little bit sad to me because he had promised me he would stop drinking, and when I saw him he was drunk that night".
'He made our wedding unforgettable with his fantastic music, ' the couple continued.
His rep released a statement on Friday afternoon announcing the loss.
Fans have been revisiting Avicii's music in the wake of his death, with three of his singles set to return to the United Kingdom chart this week.
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Thomas Markle Junior said his sibling had "forgotten her roots" by appearing to distance herself from his side of the family. According to the source, the actress is a perfectionist and she is trying to "control everything going on around her".
Fellow EDM superstar Calvin Harris: "Devastating news about Avicii, a attractive soul, passionate and extremely talented with so much more to do". ". This pain I can not describe".