"He joins our brothers Maurice, Monte and Ronald in heaven," his brother and bandmate Verdine White wrote.
"Rest in heaven," Drizzy captioned a photo of the former Three 6 Mafia member.
Three 6 Mafia's DJ Paul and Juicy J shared tributes on social media.
The musician and "Girls5Eva" star appeared to announce her engagement to her longtime boyfriend on New Year's Day.
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"I don’t have a plan. That should’ve been clear from the jump," Cannon said during CNN's "New Year's Eve Live" special.
The musician had recently been diagnosed with cancer.
"She was the one that kept all of us close and together for so long," her family said in a statement.
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The superstar's new single "Flowers" will arrive on Jan. 13.
