Angelina Jolie's Father Jon Voight On His Daughter's Divorce With Brad Pitt 

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Angelina Jolie\'s Father Jon Voight on Brad Pitt Split: \'Something Very Serious Must Have Happened\'

Jon Voight says he\'s "concerned" for his daughter Angelina Jolie and grandchildren in the wake of news that the actress has filed for divorce from husband Brad Pitt.

"It\'s very sad," actor Voight told

. "Something very serious must have happened for Angie to make a decision like this."

Jolie cited irreconcilable differences in her filing, according to court documents obtained by PEOPLE, and requested sole physical custody of the couple\'s six children. She has also asked that Pitt be granted visitation rights.

In a statement, the actress\' attorney said, "This decision was made for the health of the family. She will not be commenting at this time, and asks that the family be given their privacy during this difficult time."

Further, Pitt released his own statement, saying, "I am very saddened by this, but what matters most now is the well-being of our kids."

Voight, who was estranged from Jolie for several years, told

"It\'s a sad thing. Say a little prayer," Voight, 77, said.

Jolie is Voight\'s daughter with his late ex Marcheline Bertrand, with whom he also shares a son, James Haven. He previously told

he loves to dote on Pitt and Jolie\'s kids, saying last fall, "I\'m crazy about her and my grandchildren."

he heard the news about the split from Haven, asserting, "I am concerned for Angie and the children, and hopefully I will be seeing them very soon."

Pitt and Jolie were married in 2014, after nearly a decade together.

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