MONTEREY, Calif. - Dina Eastwood, the estranged wife of actor-director Clint Eastwood, filed for formal separation Monday after 17 years of marriage.

In a petition submitted to Monterey County Superior Court in northern California, the former Dina Ruiz, 48, seeks spousal support as well as physical custody of the couple's 16-year-old daughter, Morgan, The Monterey County Herald reports.

The petition states that community and separate property is still to be determined and that the couple had a prenuptial agreement, the paper said. Her attorney, C. Michael McClure, had no comment.

People magazine said Monday that Dina Eastwood has begun dating an old friend, University of Hawaii assistant basketball coach Scott Fisher, and that Fisher's ex-wife, Erica, has begun dating Clint Eastwood.

Dina Eastwood, a former TV newscaster who went by Dina Ruiz-Eastwood when she briefly returned to work as a local anchor in 2011, confirmed to Us Weekly last month that shie and Clint Eastwood, 83, have been living separately for some time but remained close.

In April, she voluntarily entered an Arizona rehabilitation facility for treatment of depression and anxiety, reported.

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The site said that she and Eastwood had been having serious marital issues for months.

The day she filed for separation, Dina Eastwood tweeted, "It is always wise to base our actions out of curiosity for knowledge or quest for truth instead of response to fear or anger."