Washington, Aug. 23 -- Actress Loni Anderson's cause of death has been revealed, nearly three weeks after the actress passed away at the age of 79, reported PEOPLE.

According to the publication, a death certificate obtained by TMZ on Friday, Aug. 22, states that Anderson died from metastatic uterine leiomyosarcoma, a rare type of cancer that begins in the uterus and can spread to the lungs and liver. The certificate noted that no other health issues were involved. Her remains were cremated and laid to rest in Hollywood on Aug. 7.

The actress died at a Los Angeles hospital after a long illness, just days before her 80th birthday on Aug. 5. Her family said in a statement, "We are heartbroken to announce the passing of our dear wife, mothe...