Brad Pitt will not be investigated by the Federal Bureau of Investigation.

Brad Pitt

Brad Pitt

After it was claimed that Brad had an altercation with his son Maddox, 15, on a private plane recently, it was reported that the Los Angeles Police Department (LAPD) had turned the case over to the FBI.

However, TMZ reports that the FBI never opened a case because "Maddox suffered no injuries and some witnesses on the jet say Brad's contact with the boy was inadvertent".

Sources from the FBI told the website that the case should never have even been referred to them.

Brad has five other children - Pax, 12, Zahara, 11, Shiloh, 10, and twins Knox and Vivienne, eight - with Angelina Jolie, who filed for divorce on September 19 after two years of marriage and last week he was granted visitation time with the kids.

A source said: "Brad has spent some wonderful time with children recently."

Angelina, 41, has been granted temporary custody of the children, while both she and Brad have been ordered to have therapy and the 52-year-old star is undergoing voluntary drug and alcohol testing.

And the insider claims the 'Big Short' star - whose visits to the children must be supervised - is determined to do "whatever it takes" to maintain his connection to the kids.

The insider added to People magazine: "Brad loves his children more than anything in this world, and they matter more than anything else to him.

"He will do whatever it takes to be with them, now and always."

It was recently claimed that Brad doesn't want to "play dirty" in their custody battle, despite having "so much stuff" he could use against his estranged wife.

Speaking previously, a source said: "There is so much stuff on Angelina but Brad just doesn't want to go there. He told his team he doesn't want to play dirty.

"Brad just wants to work through everything and get to a place where there can be some certainty about what's going on. The kids are the only thing he's hanging on to."

The current custody arrangement is in place until October 20.

In her divorce filing, the 'Maleficent' actress requested sole physical but joint legal custody of the kids, with her estranged spouse granted visitation rights, but Brad wants all custody to be shared.