Brad Pitt is asking a judge to grant him joint custody of his six children in his split from Angelina Jolie Pitt, according to a divorce filing Friday.

The actor's request was included in his response to Jolie Pitt's Sept. 20 petition to end their two-year marriage. The actress sought sole physical custody of their six children, who range in age from 8 to 15.

Custody has been the major issue in the breakup so far, with authorities investigating Pitt over what happened during a dispute on a private flight with his family in mid-September.

The couple reached a temporary custody agreement that allowed the actor to visit his children while the investigation by a child welfare agency in Los Angeles is ongoing.