The actor paid tribute to the 61-year-old via The Hollywood Reporter on Friday, writing in a statement that “Christina was a lovely, caring woman.”
The Oscar winner, 94, concluded, “I will miss her very much.”
The “Man With No Fame” star’s spokesperson told the outlet that further information about Sandera’s passing will not be forthcoming.
Page Six has reached out to Eastwood’s rep for additional comment.
The couple had been together since 2014.
At the time, Sandera was working as a hostess at Eastwood’s Mission Ranch Hotel and Restaurant in Carmel-by-the-Sea, Calif.
They made their red carpet debut at the 2015 Academy Awards.
Prior to their romance, Eastwood was married to journalist Dina Ruiz from 1996 to 2014.
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The Golden Globe winner’s first marriage was to model Maggie Johnson, with the duo tying the knot in 1953 and calling it quits 11 years later.
The pair did not, however, divorce until 1984.
Eastwood fathered eight children over the years, welcoming daughter Morgan, 27, while married to Ruiz, as well as son Kyle, 56, and daughter Alison, 52, with Johnson.
During their time together, he also conceived daughters Laurie, 69, and Kimber, 60, with an unidentified woman and stuntwoman Roxanne Tunis, respectively.
His children with flight attendant Jacelyn Reeves — son Scott, 38, and daughter Kathryn, 36,— were born in 1986 and 1988.
Eastwood and actress Frances Fisher welcomed daughter Francesca, now 30, in 1993.
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