Brad Pitt is under investigation after he allegedly became abusive with one of his children in front of estranged wife Angelina Jolie and some of their other kids, according to reports. The family was in their private plane on a tarmac when Pitt allegedly lost it, screaming and getting physical with one of his six children with Jolie, TMZ first reported. L.A. County Department of Children and Family Services began their probe after an anonymous tipster alerted authorities to the incident, reports said. But later Thursday, the LAPD denied it is investigating the reported accusations against Pitt, saying in a statement to KTLA on Thursday: 'The abuse child unit with LAPD has no open investigation on Brad Pitt or Angelina Jolie..