A coroner's report released Friday said Taxi and Grease star Jeff Conaway's death May 27 was caused due to major internal infection. The New York-bred actor was 60.

A toxicology test was not conducted on Conaway because he was hospitalized weeks before his death, so his blood would have come clean, Los Angeles County coroner Craig Harvey told The Associated Press.

But when Conaway was admitted in hospital on May 10, opiates and other drugs were in his system, Harvey said.

Conaway's urine test at that time was reported to be positive for multidrug intake, according to the coroner's office.

TMZ has claimed to have obtained a copy of the coroner's report. It reportedly states the major internal factors include a heart-valve infection, an infected arterial blockage, pneumonia, coronary artery disease, and encephalopathy -- a brain disorder resulting from drug overdoses.

Conaway was admitted to the hospital May 10, and was put into a medically induced coma a week later. He was taken off life support May 26 and died the following morning at the Encino Tarzana Medical Center.

Victoria Spinoza, Conaway's on-again, off-again girlfriend, had  previously found him unconscious at a San Fernando Valley home and had him admitted to the hospital. Conaway had been staying at the home with a friend.

Conaway was born in New York, and his first performance there was in the Broadway production of All The Way Home.