A fourth woman has come forward with details of Donald Trump touching her without consent.

Natasha Stoynoff, who was working as a reporter for People magazine in 2005, revealed in a first-person account that the businessman kissed her without her consent right before an interview she was about to conduct with Trump and his wife.

She was due to talk to the couple for a feature story on their first wedding anniversary.

REUTERS Donald Trump says the allegations of sexual assault have been made up to hurt him.

"I turned around, and within seconds, he was pushing me against the wall, and forcing his tongue down my throat," Stoynoff wrote.

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1 NEWS Jessica Leeds spoke with the New York Times about her claims, which Trump angrily denied.

He told her later: "You know we're going to have an affair, don't you?"

Stoynoff had been covering "the Trump beat" for a number of years, and maintained a professional relationship with the business magnate and his wife, Melania.

The alleged assault happened after Trump invited Stoynoff to view a "tremendous" room. He then closed the door behind him and committed the offence.

JIM YOUNG/REUTERS The women say they want the public to know what allegedly happened to them. They say they both support Hillary Clinton's bid for president.

​Stoynoff writes Trump's "looming figure" meant she was unable to unpin herself from the wall, and was grateful a butler interrupted the incident "a minute later".

Melania entered the room shortly after, and Stoynoff – describing herself as "utterly violated" – persisted with the interview.

"I tried to act normal. I had a job to do, and I was determined to do it," she wrote.

People magazine ran the Trump wedding anniversary story, but Stoynoff later asked to be taken off the Trump beat.

﻿'HE WAS LIKE AN OCTOPUS'

Ruptly Donald Trump dismisses sexually-aggressive comments he made about women as "locker room talk" in his second debate against Hillary Clinton.

Stoynoff's revelation comes after three other women accused Donald Trump of groping or kissing them without their consent, in news reports published on Wednesday.

The accusations emerged just days after Trump insisted in the second presidential debate he had never engaged in such behaviour.

One of the four women alleges Trump grabbed her breasts and tried to put his hand up her skirt during a flight more than three decades ago, the New York Times reported.

Manhattan woman Jessica Leeds said it was the first time they had met, and Trump happened to be sitting next to her in first class, during a business trip.

"He was like an octopus," she told the paper. "His hands were everywhere."

Leeds fled to the back of the plane after the encounter. "It was an assault," she said.

When Leeds heard Trump denying he had ever sexually assaulted women during the debate earlier this week, she said she "wanted to punch the screen".

Meanwhile, Rachel Crooks said she was experiencing similar feelings while watching the debate at her home in Ohio.

Crooks said Trump's claim that his "locker room talk" never reflected his actions was a lie.

She was a 22-year-old receptionist at a real estate investment and development company in Trump Tower in Manhattan, when she encountered the Republican presidential candidate outside an elevator in the building one morning in 2005.

Crooks told the New York Times she introduced herself to Trump and they shook hands but he wouldn't let go of her hand.

She claimed he started kissing her cheeks, then he kissed her "directly on the mouth".

It felt like a violation, Crooks said.

"It was so inappropriate ... I was so upset that he thought I was so insignificant that he could do that."

Following the alleged encounter, she returned to her desk and immediately called her sister and told her what happened.

Days later, Trump, then recently-married to his wife Melania, came to her office and requested her phone number, saying he planned to give it to his modelling agency. She was never contacted by the agency, reported the NY Times.

A third woman says Trump groped her bottom at his Mar-a-Lago resort 13 years ago, the Palm Beach Post reported.

Mindy McGillivray, 36, said she was there accompanying a photographer friend who was shooting a Ray Charles concert.

"All of a sudden I felt a grab, a little nudge. I think it's Ken's camera bag, that was my first instinct. I turn around and there's Donald. He sort of looked away quickly. I quickly turned back, facing Ray Charles, and I'm stunned," she said.

McGillivray said she never reported it to authorities.

But her companion that day, photographer Ken Davidoff, told the Palm Beach Post that McGillivray pulled him aside moments after the alleged incident and told him: "Donald just grabbed my ass".

McGillivray said when she heard Trump deny ever inappropriately touching or kissing a woman during the debate, she rose from her couch and yelled at the TV screen: "You liar!"

The news came five days after The Washington Post reported Friday on a 2005 video in which Trump can be heard making vulgar comments on a hot microphone about physically forcing himself on women sexually.

At Sunday's debate, Trump was asked by a moderator whether he had ever behaved in such a way.

"No, I have not," he responded.

Separately, CBS News on Wednesday released 1992 footage filmed for Entertainment Tonight in which Trump is heard commenting about a young girl: "I'm going to be dating her in ten years."

Also on Wednesday, Rolling Stone published a story that included the allegations of Cassandra Searles, Miss Washington 2013.

In a comment she appended to a Facebook post made earlier in the year on Trump treating pageant contestants "like cattle", Searles wrote: "He probably doesn't want me telling the story about that time he continually grabbed my ass and invited me to his hotel room." Yahoo covered her post and comment in June.

TRUMP DENIES ALLEGATIONS

When asked about the women's allegations by the NY Times, Trump denied the alleged abuse.

In a phone interview with the NY Times, Trump said "none of this ever took place".

He was considering filing a lawsuit against NY Times and was consulting with advisers about his legal options, according to two people close to him.

Trump reportedly became agitated and shouted at the reporter who was interviewing him, saying the NY Times was making up the allegations to hurt him.

"You are a disgusting human being," he told the reporter.

He continued to insist her did not inappropriately kiss or touch women: "I don't do it. I don't do it. It was locker room talk."

In a statement issued by his campaign after the NY Times story was published, spokesman Jason Miller said: "This entire article is fiction."

Trump spokeswoman Hope Hicks told the Palm Beach Post "there is no truth" to the third allegation.

His campaign denied the fourth allegation, People reported.

But in each of the first three instances, the newspapers spoke to people close to the women – a universe that includes friends, family members, significant others and colleagues – who verified that they told them their stories about what they say happened months or years ago.

In the fourth, the reporter wrote a detailed first-person account of what she says happened on People's website.

MORE QUESTIONABLE FOOTAGE

The women's allegations come as more questionable footage of Trump surfaces.

Video from a 1992 Entertainment Tonight Christmas feature shows Trump looking at a group of young girls before stating he would be dating one of them in 10 years. He would have been 46 years old at the time.

This isn't the first time Trump's spoken about dating younger women, in 2006, he made a similar comment about his own daughter, Ivanka Trump: "I've said that if Ivanka weren't my daughter, perhaps I'd be dating her," he said.

The unearthed footage comes after a 2005 previously unaired Access Hollywood recording of Trump bragging about sexually assaulting women was leaked ahead of the second presidential debate.

In the tape, which has thrown his campaign into disarray, Trump was heard discussing his attempts to bed a married woman, and bragging that he can "do anything" to women because he was a celebrity.

"When you're a star, they let you do it. Grab them by the p..... You can do anything," he said.

Trump was also interviewed by TV3 (now Newshub) while visiting New Zealand in 1993 as part of a consortium bidding for a casino operator's licence.

In the interview, Trump said some women were more beautiful than others.