Apparently the child who was absent during Brad Pitt's recent visitations with his kids was his oldest son, Maddox.

We reported last week that the actor saw his children recently during a supervised visit, but not all of his kids were present during the visitation. A source later revealed to People that Pitt has seen his children twice but both times Maddox was not there.

The 15-year-old and Pitt reportedly got into some type of altercation on the family's private plane in September and the L.A. Department of Children and Family Services is investigating whether or not Pitt was verbally or physically abusive to the teen.

The Fight Club star came to a temporary custody agreement last month with Angelina Jolie in which he agreed to random drug and alcohol testing and monitored visits with the kids. However, the terms of that agreement are only in place until Oct. 20.

Jolie filed for divorce from Pitt on Sept. 15 after two years of marriage.