An investigation into whether Brad Pitt was abusive toward his son on a private flight in September says the case has been closed with no finding of abuse by the actor, a source familiar with the inquiry said Wednesday.

The source, who was not authorized to speak publicly, told The Associated Press that the investigation was closed within the past few days. Multiple sources have said the Los Angeles County Department of Children and Family Services had been looking into allegations Pitt was abusive toward his 15-year-old son Maddox, on the flight in mid-September.

Pitt’s wife, Angelina Jolie, filed for divorce days after the incident, and her attorney said it was “for the health of the family.” A department spokesman said the agency could not confirm it investigated Pitt. Custody of the actors’ six children has been the primary issue in their divorce. Jolie, 41, is seeking sole custody of the children, while Pitt, 52, is seeking joint custody.

Pitt has had visitation with his children under terms agreed upon by the former couple. Jolie’s representatives said Monday that an agreement on custody had been reached, although a final agreement will be part of the couple’s divorce judgment when it is entered. California law favors joint custody, although details about custody arrangements are rarely made public in celebrity divorce cases. Representatives for Pitt and Jolie did not immediately return messages seeking comment Wednesday.

The news comes almost a day after “Allied” star Pitt made his first public appearance since Jolie filed for divorce on Sept. 19.

Pitt on Tuesday attended a private Los Angeles screening of the African-American coming-of-age drama “Moonlight,” coproduced by Pitt’s company, Plan B Entertainment. Pitt and his friend, Oscar-winner Julia Roberts, spoke together at a podium about the acclaimed film, reported “Entertainment Tonight,” and the two posed for photos with star Trevante Rhodes and writer-director Barry Jenkins.

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Pitt had canceled a Sept. 28 appearance at the Los Angeles premiere of Terrence Malick’s documentary “Voyage of Life,” for which Pitt narrated one of the film’s two versions.

With Frank Lovece