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According to TMZ, Robert was found dead in his home in San Fernando Valley, California, on Monday evening. He will be remembered in the music industry years in the years to come, as is his grandfather, the legendary jazz musician Nat King Cole who died from lung cancer in 1965.

The county coroner's office says the death was reported as due to natural causes but an autopsy is planned.

Family members have told the website that he died of a heart attack, nearly two years after the death of his mother.

According to authorities, Robert died of a heart attack.

Robert's dad died of a heart attack at age 34, so it could be heart disease runs in the family. Her official cause of death was congestive heart failure.

As Monsters and Critics noted earlier this year, citing an Autopsy: The Last Hours Of... episode, a long history of past drug addiction allegedly played a part in Natalie Cole's untimely passing.

Yancy's mother, Natalie Cole, struggled with drugs in her lifetime before her 2015 death.

Robert Yancy (third from right), at mother Natalie Cole's 60th birthday party in 2010. Following the tragic news, family and friends have shared their deepest sympathies over the death of Yancy.