Los Angeles, Jun 30 (IANS): Michael Moore's documentary about US President Donald Trump will release in September.

During an appearance on "The Late Show with Stephen Colbert" on Thursday, the filmmaker revealed that "Fahrenheit 11/9" -- both a nod to the title of his 2004 documentary about former President George W. Bush and a reference to the day Trump was declared winner in 2016, will be released on September 21, reports cnn.com.

Moore also told Colbert that the film is about "how the hell we got in this situation, and how we are going to get out of it".

He also shared a short sneak peek as part of his appearance. In the footage, the director is seen trying to gain entry into Trump's Mar-a-Lago resort in Palm Beach, Florida.

"Just tell him it's me," Moore says at one point to a security guard.

Moore told Colbert that he was in Mar-a-Largo for just over 11 minutes.

"Did they forcibly toss you out?" Colbert asked.

"No, they're not able to do that with me," Moore said.

Last month, just after Roseanne Barr's Twitter rant got her outsed from her ABC comedy "Roseanne", Moore indicated in a Facebook post that his documentary would have at least a passing reference to Barr.