Autopsy results for the rapper known as O.D.B., who died Saturday at a Manhattan recording studio, will not be available for several days, the city medical examiner's office said Sunday.
The cause of death will be announced "pending toxicological as well as tissue studies," said Ellen Borakove, a spokeswoman for the medical examiner.
She said the results could take more than a week.
O.D.B., whose legal name was Russell Jones, had complained of chest pains before collapsing at the Manhattan studio, said Gabe Tesoriero, a spokesman for Roc-a-Fella records. He was dead by the time paramedics reached him, Tesoriero said.
O.D.B. had recently finished a prison sentence for drug possession and escaping from a drug rehabilitation clinic. He would have turned 36 today.
A founding member of the rap group the Wu-Tang Clan, he had been working on his comeback album for more than a year and was almost finished, Tesoriero said.