Avicii, whose real name was Tim Bergling, was found dead on Friday in the Omani capital Muscat. A cause of death has not been published.
"Two postmortems have been carried out … and we can confirm that there is no criminal suspicion of death," the Royal Oman Police told CNN.
Avicii's parents, two sisters and a brother are in the nation this week to repatriate his body, police said in Oman, a popular holiday destination in the Arabian Peninsula.
His family is "completely devastated," police said.
Fans gather in Stockholm
Fans gathered in Stockholm on Saturday to honor the 28-year-old Swedish superstar.
Avicii enthused clubbers with their catchy hits, flashing lights and soulful collaborations. He was one of the world's most successful DJs and a big name in the field of electronic dance music, known as EDM.
He collaborated with artists such as Madonna and Chris Martin and in 201
In messages published on social media, he said that stress, anxiety, and illness were factors in his decision. Leaving was hard, he said, but he also had other interests to pursue.
"Making music is what makes me happy, and I've met so many great people in my days of travel, seen so many amazing places, and created endless good memories," he wrote on social media back then.
"The decision I made might seem strange to some, but everyone is different and that was the right thing for me."
Partying and Fear
"Yeah, I drank too much, generally too much celebrated," he said. "Then I got a pancreatitis attack [at 21] which is very rare, which forced me to do a 180 and stop drinking."
He assured the fans that he would continue to make music – in the studio. In August 2017, a year after his last tour date, he announced that he would release a new album.
Heartfelt wishes have been fulfilled by musicians and fans. Superstar DJ Calvin Harris described him as a "beautiful soul, passionate and extremely talented."
Singer Wyclef Jean said he is like his "little brother" and will be missing.
"In my darkest hour, I went to Sweden and he was there for me and we found light in great conversation and music," Jean tweeted. "… I can not describe this pain."
CNN's Mohammed Tawfeeq has contributed to this report.