By Mike Miller
Updated November 09, 2016 at 12:00 PM EST
Jim Spellman/WireImage

The Los Angeles County Department of Children and Family Services has concluded its investigation into child abuse allegations against Brad Pitt, multiple sources tell PEOPLE.

“It was a full and thorough investigation and the determination has been made that no charges should be brought,” says a source, adding that there was no finding of abuse.

“The likely next step is a referral to family court so that the matter of custody can be determined; there is no permanent custody agreement currently in place, only an arrangement pending the outcome of this investigation. Now, with this conclusion, custody can be determined,” the source explains.

A rep for Jolie could not be reached immediately for comment, and a rep for Pitt declined to comment.

The DCFS launched the investigation after Pitt allegedly got “verbally abusive” and “physical” with Maddox, his and Angelina Jolie’s oldest child, on the couple’s private plane on Sept. 14. Jolie filed for divorce five days later.

During the DCFS investigation, both Jolie, 41, and Pitt, 52, agreed to a voluntary parenting plan, with the children living with Jolie and supervised visitation for Pitt, as well as family and individual counseling.

The investigation comes to a close just days after Jolie released a new statement saying that the former couple had reached a legal agreement about the custody of their six children: Maddox, 15, Pax, 12, Zahara, 11, Shiloh, 10, and 8-year-old twins Knox and Vivienne.

However, other sources close to the situation maintain the pair have not reached any new agreements or settled their differences, and Pitt still plans to push for joint custody.

Pitt filed a response on Nov. 4 requesting joint custody after Jolie, 41, requested sole physical custody in her Sept. 19 divorce filing.

He is expected to make his first red carpet appearance at the premiere of his new film Allied on Wednesday night.