King died late Tuesday in Santa Monica, California, at age 51.
Klein said the family did not know the cause of death but think it might have been a heart problem.
Born on Nov. 17, 1955, in Montgomery, Alabama, King was just an infant when her home was bombed during the turbulent civil rights era.
As an actress, she appeared in numerous films and even played civil rights heroine Rosa Parks in the 1978 miniseries "King." She founded a production company called Higher Ground Productions.
King was also an author and advocate for peace and nonviolence. Her mother, Coretta Scott King, died last year.
Yolanda King is survived by her sister, the Rev. Bernice A. King; two brothers, Martin Luther King III and Dexter Scott King; and an extended family.
Prayers for her family.
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