Two entertainment news outlets say Pitt is under investigation for child abuse.
He continued to rant after the plane landed, TMZ reports.
Neither People nor TMZ names their sources for the information.
“He (Pitt) takes the matter very seriously and says he did not commit any abuse of his children,” a source tells People. “It’s unfortunate that people involved are continuing to present him in the worst possible light.”
News of the couple’s divorce broke Tuesday.