The FBI says it is gathering information before deciding whether to launch a federal probe into an alleged incident on a plane carrying Brad Pitt and his children.
Allegations over a purported incident on the plane emerged in the US media just days after 41-year-old Angelina Jolie filed for divorce from Pitt and sought custody of their six children.
"The FBI is continuing to gather facts and will evaluate whether an investigation at the federal level will be pursued," the FBI said in a statement.
It did not offer any details of the allegations but said the location was within US aircraft jurisdiction, "specifically, an aircraft carrying Mr. Brad Pitt and his children".
The Los Angeles Police Department denied on Thursday reports that the Pitt, 52, was under investigation.
"We have no report in our record for any filings for Brad Pitt, we are not having any investigations regarding Brad Pitt," police spokesman Lorenzo Quezada told AFP.
The LA County Department of Children and Family Services also denied that it had confirmed allegations against Pitt to any media outlets.
Several US media outlets on Tuesday reported that Pitt had been involved in an angry outburst with at least one of his children.
The two actors are among America's biggest film stars. Together they came to be known as "Brangelina" -- Hollywood's most glamorous and celebrated couple in decades.
The A-listers wed in France in August two years ago, but have been a couple since 2004.
They have three biological and three adopted children together.