apper Coolio died from a lethal dose of fentanyl, his manager confirmed.
The Gangsta’s Paradise star, 59, was found dead at a Los Angeles house in September after he went to use the bathroom and never came out.
Paramedics suspected he had a cardiac arrest but his manager Jarez Posey said the coroner’s office had told the family that he died from an overdose of the opioid.
Fentanyl is up to 100 more potent than morphine and has played a role in the deaths of a string of music stars, including Prince as well as The Wire actor Michael K Williams.
Coolio had traces of heroin and methamphetamines in his system too.
His severe asthma and decades of smoking cigarettes also played a part in his death.
He appeared on Celebrity Big Brother in 2009.
Coolio was born in Monessen, Pennsylvania, and later moved to Compton, California.
He sold more than 4.8 million albums and his songs attracted over 978 million streams, according to Luminate. He was nominated for six Grammys.