According to TMZ.com, more than 200 mourners turned out for the funeral, which took place in Glendale, California at the Church of the Recessional.
The 20-year-old was found dead last Saturday (August 23) by his mother, who called 911 at around 10 a.m. Despite paramedics’ efforts, he pronounced dead at the scene.
An autopsy was done last week, but it did not reveal the cause of death. Further tests have been ordered to try to discover the cause.
"We don't know yet why he died," the Los Angeles County Department of Coroner told People. "There were no signs of trauma or foul play. We'll be doing toxicology and other tests, which will take up to six weeks.
"The test is "mainly to determine whether alcohol or drugs played a part in a person's death," Capt. Winter said.
Young had been out with friends the night prior, and his mother told police that "she recalled hearing him snoring around 5:30 a.m."
"Dr. Dre is mourning the loss of his son," the rapper's publicist Lori Earl said in a statement Tuesday. "Please respect his family's grief and privacy at this time."
Dr. Dre has four other children -- sons Curtis, 26, Marcel, 17, and Truth, 11, and daughter Truly, 7.