Heart Attack Kills Clint Eastwood's Longtime Partner

Christina Sandera, the longtime girlfriend of Clint Eastwood, died on July 18 due to a heart arrhythmia. She was 61.

Christina Sandera, the longtime partner of Clint Eastwood, died on Thursday, July 18, at the age of 61. According to a death certificate obtained by Fox News Digital, Sandera's cause of death was cardiac arrhythmia, an irregular heartbeat. "Atherosclerotic coronary artery disease" was listed as an underlying cause which contributed to her death.

Sandera, a philanthropist, died at 1:46 p.m. Her manner of death was listed as "natural" on the official report. Coroners performed an autopsy on Sandera before her body was cremated.

Heart Attack Kills Clint Eastwood's Longtime Partner

Heart Attack Kills Clint Eastwood's Longtime Partner

Eastwood and Christina were relatively low-profile about their relationship, having met nearly a decade ago while she was employed at his Mission Ranch Hotel and Restaurant in Carmel-by-the-Sea near Monterey, California.

Clint and Christina dated for nearly a decade but did not marry. Eastwood has been married twice before.

Heart Attack Kills Clint Eastwood's Longtime Partner

Heart Attack Kills Clint Eastwood's Longtime Partner

Clint Eastwood paid tribute to Christina Sandera shortly after her death, calling her a "lovely, caring woman," and saying that he would miss her very much.

Clint's daughter, Morgan Eastwood, mourned the loss of Sandera in an Instagram post shared on Sunday.

Heart Attack Kills Clint Eastwood's Longtime Partner

Heart Attack Kills Clint Eastwood's Longtime Partner

"A devastating loss for our whole family," Morgan wrote. "Thank you Christina for being a good partner to my Dad. You will be missed."

Prior to his relationship with Sandera, Eastwood was married twice. His first marriage was to model Maggie Johnson from 1953-64. The former couple didn't finalize their divorce until 1984.

Heart Attack Kills Clint Eastwood's Longtime Partner

Heart Attack Kills Clint Eastwood's Longtime Partner

Eastwood then married Dina Ruiz in 1996 and the couple divorced in 2014.

Clint Eastwood is a father of eight: Laurie Murray, Kimber Eastwood, Kyle Eastwood, Alison Eastwood, Scott Eastwood, Kathryn Eastwood, Francesca Eastwood, and Morgan Eastwood.

Eastwood has received numerous awards for his work in film, including two Academy Awards for Best Director for "Unforgiven" and "Million Dollar Baby."

He has also been awarded the Presidential Medal of Freedom, the highest civilian award in the United States.