Just days after news broke that Jolie had filed for divorce from her husband of two years, People magazine is reporting that they confirmed that the Los Angeles Police Department and L.A. County Department of Children and Family Services are both investigating Pitt for an incident that allegedly occurred on the couple's private plane while Jolie and some of their kids, who have not been individually named, were present.
"It's unfortunate that people involved are continuing to present him in the worst possible light," the source adds.
The L.A. County Department of Children and Family Services tells ET they are "never allowed to comment" on matters that involve minors, while the LAPD says they are "not handling any reports or allegations into child abuse for Mr. Brad Pitt."
In addition, ET has reached out to Pitt and Jolie's reps.
Jolie, 41, filed for divorce from Pitt on Monday and requested physical custody of the children, Maddox, 15, Pax, 12, Zahara, 11, Shiloh, 10, and twins Knox and Vivienne, 8. She is also asking for shared legal custody of the kids, and cites irreconcilable differences as the reason for the couple's split.
"I am very saddened by this, but what matters most now is the well-being of our kids," Pitt said in a statement (via People) after news broke of the divorce. "I kindly ask the press to give them the space they deserve during this challenging time."
Jolie's attorney also released a statement, saying, "This decision was made for the health of the family."
Pitt and Jolie -- who met in 2003 on the set of Mr. & Mrs. Smith, and began publicly dating a few years later -- were last seen together with Vivienne and Knox in July when they celebrated the twins' birthdays in Los Angeles, California.
Ian Halperin, the author of Brangelina, tells ET that the way Jolie filed for divorce could indicate that contentious custody negotiations are on the way. "It's going to be the most vicious divorce battle Hollywood's ever seen," he said.
"She's really positioned herself for a career in the U.K.," Halperin continued. "If there is joint custody, Brad could block it and force them to live in the U.S., something she doesn't want. She wants all her children schooled and brought up in the U.K."