Tyka Nelson, the Minneapolis-based singer and sister of the late superstarPrince, died Monday.
Her death was announced to theMinnesota Star Tribuneby her son President Nelson.
No cause was given, although she had been in failing health for some time.
Tyka Nelson at Universal Music Group 2017 Grammy after partyGetty Images
She had retired from music but was reportedly working on a memoir at the time of her death.
