Li Yang: Democrats demand FBI investigation into spa owner linked to Trump and Robert Kraft

Ms Yang's lawyer says that her client has been in the dark on the allegations raised against her following the human trafficking sting at a spa she no longer owns

Congressional Democrats have formally asked the FBI and US intelligence agencies to investigate the relationship between Donald Trump and Li "Cindy" Yang, who founded and subsequently sold massage parlours implicated in a human trafficking raid last month.

The requested investigation comes as reports have indicated Ms Yang may have started a business that sold access to the president at his Mar-a-Lago resort in Florida.

Ms Yang found herself at the centre of press intrigue after photos of her with Mr Trump at a Super Bowl watch party earlier this year surfaced, followed by other photos showing the Chinese national with the president and members of his family.

The photos provide a connection between the two, and came out after an investigation in Florida that led to a prostitution sting at massage parlours that Ms Yang helped open, but no longer owns.

Among those caught in the prostitution scandal was the owner of the New England Patriots, Robert Kraft, whose team was playing when one of the photos between Ms Yang and Mr Trump were taken. Mr Kraft is known for his support and friendship with the president.

In response to the attention, an attorney representing Ms Yang, Michelle Merson, said that her client is unaware of any wrongdoing.

"She is being accused of human trafficking, providing favours to Chinese politicians and businesses by selling access to the president," Ms Merson said in a statement to NBC News. "She's being accused of some very, very serious things that she is totally in the dark for… [and] she denies everything."

Ms Yang sold the Orchids of Asia spa years ago, but maintains ownership of several other spas in southern Florida. Those locations have so far not been implicated in the sting that caught Mr Kraft up in alleged sexual misconduct.

Ms Yang came to the United States in 2003 from China, and her accent is reportedly difficult to understand for some first meeting her.