The Los Angeles County Department of Children and Family Services has extended its investigation into allegations that Brad Pitt was involved in an alleged incident with a child aboard a private plane flying from Europe to L.A. on Sept. 15. The extension, we’re told, is due to new “key accusations.” A separate source, however, insists that “the information about all sorts of other problems is not accurate.” In fact, the FBI—who visited Angelina Jolie’s residence in Malibu last week for several hours—has conducted interviews with all potential witnesses, including some of their children. They’ve also interviewed other witnesses, including the flight crew aboard the plane during the alleged incident that was originally reported to the DCFS. There have been reports of “unintentional contact” between Brad and a child. The investigation may continue with more witness interviews, but we’re told they’re expecting to conclude it shortly. Once they finish the investigation, if they decide there is probable cause of child abuse, they will write up reports and pass those along to the US District Attorney who will then look at the evidence and decide whether to prosecute. No matter the outcome, the DCFS’ decision will not affect Brad and Angelina’s divorce or their custody agreement over their six kids—Maddox Jolie-Pitt, 15, Pax Jolie-Pitt, 12, Zahara Jolie-Pitt, 11, Shiloh Jolie-Pitt, 10, and twins Knox Jolie-Pitt and Vivienne Jolie-Pitt, 8—which will have to be decided in family court. So far, Pitt has seen his children twice since Angelina filed for divorce on Sept. 19, though Maddox was notably missing. According to a source, he was “mad at his dad.” The teen was reportedly part of the alleged altercation that occurred on the plane, but after not seeing his father for a month, they came face-to-face last week for the first time while meeting with a therapist present. We’re told there is still a lot of work to be done regarding their relationship. As part of a temporary custody agreement Brad and Angelina reached in September, the actress was given sole custody of their children, and Brad received visitation rights. At the time, we were told Angelina, 41, did not intend for the custody situation to remain permanent as she believes the former couple will need to co-parent in the future for the sake of their children. The reports tell that Brad was also eager “to see the kids and to work out an arrangement that is best for them” and “wants to work things out privately and amicably.” Meanwhile, two FBI agents visited Angelina at her home in last Tuesday. They were there for three hours while seeking evidence that might warrant a formal investigation into the allegations surrounding Brad.