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"Michael Clarke Duncan&amp;#039;s cause of death has been revealed. The Oscar nominee passed away on September 3, several weeks after he suffered a severe heart attack from which he did not recover.  The LA County coroner previously confirmed that Duncan died of natural causes, but a more concrete cause has been released in his death certificate. Duncan apparently suffered from respiratory failure and a heart attack amongst a variety of other ailments. An irregular heartbeat and sarcoidosis were also contributing factors to his death, according to TMZ. A public memorial for Duncan was held on Sunday (September 9) at Forest Lawn cemetery in the Hollywood Hills. Duncan&amp;#039;s family held a private funeral on Monday (September 10). Tom Hanks, Olivia Munn, Gary Sinise, Robert Rodriguez, Sherri Shepherd and Roger Ebert were among the many stars to memorialise the late Green Mile actor in the hours after his passing. Duncan was 54 years old at the time of his death. He is survived by partner Omarosa Manigault-Stallworth.  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/showbiz/news/a405241/michael-clarke-duncan-died-of-respiratory-failure/>