Aug 28, 2008, 9:30 GMT
An autopsy of Dr. Dre's son, Andre Young Jr. has failed to find a cause of death.
Authorities have been unable to establish how he died, so further tests on the 20-year-old have been ordered, the Los Angeles County Department of Coroner has revealed.
Andre Jr. was found unresponsive at his California home by his mother Jenita Porter, who he lived with, on Saturday (23.08.08). She called paramedics, who declared him dead when they reached the scene.
Captain Ed Winter told People magazine: "We don't know yet why he died.
"There were no signs of trauma or foul play. We'll be doing toxicology and other tests, which will take up to six weeks."
According to the officer, a toxicology test is carried out "mainly to determine whether alcohol or drugs played a part in a person's death".
Andre had been out with friends the night before his death but his mother says she heard him come home around 5.30am.
Dr. Dre - who lives in a separate home in California with his younger children and wife Nicole Threatt - released a statement through his publicist earlier this week saying: "Dr. Dre is mourning the loss of his son. Please respect his family's grief and privacy at this time."
The 43-year-old star also has four other children.
He has a 17-year-old son Marcel with his ex-lover, singer Michel'le as well as two kids with Nicole, 11-year-old son Truth and daughter Truly, seven.
Dre is also the biological father of rapper Hood Surgeon.
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