Oscar-nominated actress Sondra Locke has died of cancer at the age of 74, United States news outlets reported Thursday night.
It is not clear why it took almost six weeks for her death to come to light.
Locke had a pretty storied filmography over the years, which became intertwined with Clint Eastwood's starting in 1975.
Locke was nominated for an Academy Award for Best Supporting Actress for her first film, The Heart Is a Lonely Hunter, a 1968 drama based on a novel by Carson McCullers.
Locke also played singer Rosemary Clooney in a 1982 TV biopic, and directed the 1986 film Ratboy, which flopped in the United States but was popular with critics in Europe. For the role, she also received Golden Globe nominations for Best Supporting Actress and Most Promising Newcomer.
According to Radar.com, which says it obtained the actress's death certificate, Locke died from cardiac arrest due to breast and bone cancer. According to Radar, her cancer returned three years ago. Their professional association began with the western The Outlaw Josey Wales in 1976 and ended with the Dirty Harry movie, Sudden Impact, in 1983. "A key fixture in my 70s/80s film memories because of her films with Clint Eastwood & I particularly liked her in the gently nostalgic Bronco Billy". In 1989, she filed a palimony lawsuit against Eastwood after he locked her out of the house they shared and he fathered two children with another woman.
Locke is survived by her husband, fellow actor Gordon Anderson.
Locke then starred in "Cover Me Babe", "Willard", "A Reflection of Fear", and "The Second Coming of Suzanne" and took TV roles in "The F.B.I.", "Cannon", "Barnaby Jones", "Kung Fu", "A Feast of Blood" and "Gondola". The locks were changed and her belongings were placed outside a home she thought had been a gift from Eastwood. A phone number listed in Anderson's name rang without being picked up.