Clint Eastwood's Partner Christina Sandera's Cause of Death Revealed

UPDATE: Christina Sandera's cause of death has been revealed. According to the New York Post , the long-term girlfriend of legendary actor Clint Eastwood died due to a heart attack.

The outlet cites her death certificate which was released by the Monterey County Health Department earlier in the week. Her cause of death is officially listed as "cardiac arrhythmia," which is an abnormality in the timing of the heartbeat, according to the Post.

The death certificate also notes that Atherosclerotic coronary artery disease also played a part in Sandera's passing. The original announcement continues below.

Eastwood confirmed his longtime girlfriend Sandera died one week ago. According to TMZ , the legendary actor and director honored her with a statement but didn't reveal any cause of death at the time.

"Christina was a lovely, caring woman, and I will miss her very much," Eastwood said in a statement. A Warner Bros. spokesperson also added that no further information will be released.

The 61-year-old and Eastwood reportedly met when she worked as a hostess at Eastwood's Mission Ranch Hotel and Restaurant in Carmel-by-the-Sea, California. The couple started dating in 2014. She went public with Eastwood at the 2015 Academy Awards in support of American Sniper . She also joined him on the red carpet for his films The Mule , Sully , The 15:17 to Paris and Richard Jewell .

Prior to Sandera, Eastwood was married twice and in a slew of long-term relationships over the years. His most famous romance was with Oscar-nominated actress Sondra Locke , living as domestic partners for 14 years and making six movies together. He was also connected to Jacelyn Reeves and actress Frances Fisher.

His two marriages were to model Maggie Johnson from 1953 until 1964, with a final divorce coming in 1984, and then married TV anchor Dina Ruiz from 1996 until their divorce in 2014.

Eastwood and Sandera kept their relationship mostly quiet, with their few public appearances offering the only insight into their relationship.