Footage has emerged of Donald Trump making vulgar comments about women on the set of Days of Our Lives in 2005.
The Republican nominee boasted about groping, kissing and making sexual advances towards women using nauseating language, in a recording from 2005 obtained and published by The Washington Post.
The recording is of an off-camera conversation with Access Hollywood host Billy Bush, caught as they were arriving on the set of Days of Our Lives to film a segment on Mr Trump's cameo on the show.
Bush is a cousin of former US president George W Bush and Republican ex-presidential hopeful Jeb Bush.
In the recording, Mr Trump talks about trying to have sex with a married woman and brags about his fame.
"I moved on her and I failed - I'll admit it," Mr Trump is heard saying.
"I did try and f*** her - I moved on her like a bitch, but I couldn't get there, and she was married. Then all of a sudden I see her, she's now got the big phony tits and everything."
Mr Trump then makes lewd comments in reference to Days of Our Lives actress Arianne Zucker.
"I've got to use some Tic Tacs, just in case I start kissing her," he says.
"You know I'm automatically attracted to beautiful - I just start kissing them. It's like a magnet. Just kiss - I don't even wait.
"When you're a star they let you do it. You can do anything - grab them by the p***y. You can do anything."
The tape was recorded a number of months after Mr Trump married his third and current wife, Melania.
The latest controversy comes just days after an interview with a Las Vegas television station on Wednesday (local time), when Trump claimed "there's nobody that has more respect for women than I do".
The exposure of the Days of our Lives tape prompted Mr Trump to apologise for the first time in his 16-month campaign, via a statement.
"This was locker room banter, a private conversation that took place many years ago. Bill Clinton has said far worse to me on the golf course - not even close. I apologise if anyone was offended."
Democratic nominee Hillary Clinton tweeted a link to the story, condemning the comments as "horrific".
Mr Bush also apologised on Friday following the release of the video.
"Obviously I'm embarrassed and ashamed. It's no excuse, but this happened eleven years ago - I was younger, less mature, and acted foolishly in playing along. I'm very sorry," he said in a statement released to Variety.
Bush worked for Access Hollywood from 2001 to 2016, before moving to NBC Today.
The recording comes just ahead of the candidates' second debate on Sunday (local time).