In the murky waters of the Brad Pitt-Angelina Jolie divorce case, fresh accusations have been hurled at the 51-year-old actor. The Los Angeles County Department of Children and Family Services has extended its probe into the charges that Brad Pitt was involved in an altercation with a child on a private plane on Sept. 15.

Why has the investigation been extended? There are mixed signals.

While one party says that new "key accusations" have been filed against Pitt, another source is firm that "the information about all sorts of other problems is not accurate."

Last week, the FBI visited Angelina in her Malibu residence and interviewed all the characters and witnesses - even their kids. They also queried the flight crew on the plane when the altercation happened.

There are two or three new accusations that the investigators are probing.

Firstly, that the couple was involved in a number of altercations with each other. The children witnessed them, unfortunately, so they are going to be pulled into it.

Secondly, Brad Pitt has been charged with harming some of the children through verbal abuse.

Thirdly, there has also been "unintentional contact" between Brad and a child, say sources.

Pitt has seen all his children twice since the divorce was filed. However, Maddox was not part of the meetings. A source said that he was "mad at his dad."

It was only last week, with a therapist, that they had a meeting. Reports say that their relationship needs some work, and ended "abruptly" as Maddox chose to not remain with his father. 

Interviews included conversations with the children, and asking questions about the couple's interaction.

"They're looking for a history or pattern of behavior," a legal source with knowledge of the situation tells PEOPLE. With this continuation, says the source, "They are looking at the original inciting incident and anything surrounding that, and looking at any relevant history."

The investigations will go on for a while, but if they find evidence of child abuse, they will write them and hand them to the U.S. District Attorney, who will examine the available evidence and finalize the prosecution.

However, in spite of the DCFS' decision, the final divorce and custody agreement over the six kids can only be finalized in a family court.