The Los Angeles police department denied that it was conducting an investigation into Pitt, and said that to the best of its knowledge, no allegations had been made against him.
It said that the incident involved “unruly behaviour” and that the Los Angeles county department of children and family services was conducting an investigation.
The alleged incident is believed to have taken place on 14 September, on a private jet flying from France to Los Angeles.
The Federal Bureau of Investigation has said it is deciding whether to pursue and investigate an alleged incident regarding the actor Brad Pitt and his children while travelling on a private jet.