AceShowbiz -

The Department of Children and Family Services has extended their investigation into Brad Pitt's parenting after a new accusation of alleged child abuse was made. The DCFS probe into Pitt was supposed to close by the end of this month.

"The investigation was not closed on schedule for a reason," an insider with knowledge of the investigation tells InTouch Weekly, "The DCFS investigation is now going to continue for at least several more weeks."

According to the insider, the DCFS is heavily investigating new accusation that Pitt harmed some of his children by verbally abusing them on many occasions.

"Now DCFS is interviewing many people to determine if they are witnesses to any improper behavior by Brad as well as searching for others who have knowledge of his actions. That includes nannies, household staff members and more," another source reveals, "The fact that the investigation was extended is an indication of how serious this is."

This means Pitt, Angelina Jolie and their six children, Maddox, Pax, Zahara, Shiloh, Knox and Vivienne, will all have to interviewed again by the DCFS. The former couple will continue to follow a voluntary parenting plan including counseling and visitation, previously recommended by the DCFS, as its investigation continues.