Michael Clarke Duncan was buried Monday and his official cause of death has been confirmed.

The Green Mile actor passed away at the age of 54 at Cedars-Sinai Medical Center in Los Angeles on September 3 after suffering from a heart attack two months ago.

TMZ reports that Michael's funeral was attended by his fiance Omarosa Manigault, Tom Hanks, Vivica A Fox and Holly Robinson Peete.

He was buried at the Forest Lawn cemetery in Hollywood.

According to the website the immediate cause of death listed on Michael's death certificate is "respiratory failure."

Michael had a myocardial infarction on July 13 and Omorosa saved him from death after she performed CPR on the 6' 5", 325lbs star until paramedics arrived.

He was not breathing for a full five minutes and his organs were severely damaged as a result of the lack of oxygen to the brain.