Son of the late singer Natalie Cole passes away at 39

The son of the late singer Natalie Cole has passed away.

According to the Daily Mail, Robert Yancy was found dead inside his San Fernando Valley apartment on Monday by a friend who was concerned about the fact that he had not heard from the young man for a few days.

He was just 39, and his death comes 20 months after the loss of his mother in December of 2015.

Robert was also the grandson of legendary jazz singer Nat King Cole, and an accomplished drummer in his own right who worked in the music industry. 

A source tells DailyMail.com that Robert had been working on a documentary about his mother at the time of his death, adding that he still seemed deeply upset about losing Cole just this past May.

'He told me he was very depressed about his mother’s passing, saying she was the best mom in the world and he loved her deeply and he didn’t want her legacy to fade away,' explains the source.

'He wanted to remind people of how great Nat and his mom were. He felt they were underrepresented in the music world.'