During their divorce in 1991, Donald Trump's ex-wife Ivana accused him of "raping" her three years previously. But she has since clarified it was not in "a literal or criminal sense".
The allegation resurfaced in Matt Frei's Channel 4 documentary The Mad World of Donald Trump.
The allegation appeared in a sworn deposition made by Ivana Trump reported in the 1993 book Lost Tycoon: The Many Lives of Donald J. Trump, by Harry Hurt III.
According to Lost Tycoon, Ms Trump accused him of rape after he allegedly attacked her in a "violent assault".
He is alleged to have ripped off her clothes to have sex with her.
The book claims she told her friends: "He raped me."
Donald Trump denied the allegation of rape and said he had not had scalp reduction surgery in 1993, telling Newsday: "It's obviously false."
When the claims were reported by The Daily Beast in July last year, Michael Cohen, special counsel at The Trump Organisation, said: "It's not the word that you're trying to make it into."
He said Ms Trump was talking about how "she felt raped emotionally... She was not referring to it [as] a criminal matter, and not in its literal sense, though there's many literal senses to the word."
He then added: “You’re talking about the front-runner for the GOP, presidential candidate, as well as private individual who never raped anybody. And, of course, understand that by the very definition, you can’t rape your spouse.
“It is true. You cannot rape your spouse. And there’s very clear case law.”
In New York, the marital rape exemption law was struck down in 1984.
When Lost Tycoon was about to be printed in 1993, Mr Trump and his lawyers provided a statement from Ms Trump, published beneath the allegation of rape.
Donald Trump's most controversial quotes
Donald Trump's most controversial quotes
1/14 On Isis:
"Some of the candidates, they went in and didn’t know the air conditioner didn’t work and sweated like dogs, and they didn’t know the room was too big because they didn’t have anybody there. How are they going to beat ISIS?"
2/14 On immigration:
"I will build a great wall — and nobody builds walls better than me, believe me —and I’ll build them very inexpensively. I will build a great, great wall on our southern border, and I will make Mexico pay for that wall. Mark my words."
3/14 On Free Trade:
"Free trade is terrible. Free trade can be wonderful if you have smart people. But we have stupid people."
PAUL J. RICHARDS | AFP | Getty Images
4/14 On Mexicans:
"When Mexico sends its people, they’re not sending their best. They’re sending people that have lots of problems. They’re bringing drugs. They’re bringing crime. They’re rapists."
5/14 On China:
"I just sold an apartment for $15 million to somebody from China. Am I supposed to dislike them?... I love China. The biggest bank in the world is from China. You know where their United States headquarters is located? In this building, in Trump Tower."
6/14 On work:
"If you're interested in 'balancing' work and pleasure, stop trying to balance them. Instead make your work more pleasurable."
7/14 On success:
"What separates the winners from the losers is how a person reacts to each new twist of fate."
8/14 On life:
"Everything in life is luck."
9/14 On ambition:
"You have to think anyway, so why not think big?"
10/14 On his opponents:
"Bush is totally in favour of Common Core. I don't see how he can possibly get the nomination. He's weak on immigration. He's in favour of Common Core. How the hell can you vote for this guy? You just can't do it."
11/14 On Obamacare:
"You have to be hit by a tractor, literally, a tractor, to use it, because the deductibles are so high. It's virtually useless. And remember the $5 billion web site?... I have so many web sites, I have them all over the place. I hire people, they do a web site. It costs me $3."
12/14 On Barack Obama:
"Obama is going to be out playing golf. He might be on one of my courses. I would invite him. I have the best courses in the world. I have one right next to the White House."
13/14 On himself:
"Love him or hate him, Trump is a man who is certain about what he wants and sets out to get it, no holds barred. Women find his power almost as much of a turn-on as his money."
14/14 On America:
"The American Dream is dead. But if I get elected president I will bring it back bigger and better and stronger than ever before and we will make America great again."
It read: "During a deposition given by me in connection with my matrimonial case, I stated that my husband had raped me.
"I wish to say that on one occasion during 1989, Mr Trump and I had marital relations in which he behaved very differently toward me than he had during our marriage.
"As a woman, I felt violated, as the love and tenderness which he normally exhibited toward me, was absent. I referred to this as a 'rape,' but I do not want my words to be interpreted in a literal or criminal sense.
"Any contrary conclusion would be an incorrect and most unfortunate interpretation of my statement which I do not want to be interpreted in a speculative fashion and I do not want the press or media to misconstrue any of the facts set forth above.
"All I wish is for this matter to be put to rest."
After The Daily Beast ran their story about the rape allegations made in the book, Ms Trump released a statement to CNN to say: “I have recently read some comments attributed to me from nearly 30 years ago at a time of very high tension during my divorce from Donald. The story is totally without merit.
"Donald and I are the best of friends and together have raised three children that we love and are very proud of.
"I have nothing but fondness for Donald and wish him the best of luck on his campaign. Incidentally, I think he would make an incredible president.”
The divorce case between Donald and Ivana Trump was granted on the grounds of his "cruel and inhuman treatment" of her, according to a report in the New York Times in December 1990.
Ivana Trump was also subject to a gag order, which stops her from talking about her marriage to Donald Trump without his permission.
In The Mad World of Donald Trump, English television presenter Selina Scott claimed Mr Trump became "extremely abusive" and wrote 13 letters attacking her when he realised he wouldn't have control over a profile film she was making about him.
She said: “It surprises me that any woman in America can vote for this guy.”Reuse content