A woman staff member of Big Four professional services firm Deloitte was sexually assaulted by a partner from its New York office in a Bermuda hotel room, it has been alleged in an Australian financial newspaper.

The Bermuda Police Service launched an investigation after the woman reported the alleged incident and was said to have found enough evidence to question the male senior partner when he visited Bermuda.

A file was prepared for the Department of Public Prosecutions and reviewed by Crown lawyers.

But the police spokesman said: “The suspect resides in another jurisdiction and there are currently insufficient grounds to satisfy an extradition request — as such, the matter is held in abeyance.”

The Australian Financial Review said the woman was allegedly attacked when the New York partner visited the island on business and invited island employees out for a drink at his hotel in August 2015.

The woman claimed the US partner invited her to his room to discuss work matters.

She said she believed another partner from the US was also going and agreed — but found the other staff member was not in the room when she arrived.

She said the man groped her under her clothes before she was able to get out of the hotel room.

The woman, who cannot be identified for legal reasons, said she did not report the incident to colleagues for several weeks because she felt “too traumatised”.

She said: “I went straight to the office the next the morning and buried myself in mindless paperwork to shut down my brain.

“I went for long runs every day to get the alarm bells blaring in my mind to stop.

“I wanted it to go away. I didn’t want to make it more real by reporting it.”

She contacted the Bermuda Police Service three months after the alleged incident when the New York partner, said to be in his 40s, returned to the island on business.

She said: “I realised only the police could properly investigate this and only the criminal court could properly adjudicate it.”

The woman said the company later made her redundant and promised to investigate her claims.

But she was told the result of the company investigation was “inconclusive”.

The firm told The Australian Financial Review that they hired a law firm to carry out an independent investigation and that “many of the allegations were contradicted by witnesses”.

But the company admitted the woman who made the complaint was not interviewed during their investigation.

A BPS spokesman confirmed they had received a report of a sexual assault from a business woman involving a male co-worker in 2015.

The spokesman said: “The victim has initially reported the matter internally to her company some time before reporting it to the police.

“The BPS takes all matters of this nature very seriously and immediately commenced a comprehensive investigation.”

The spokesman said the matter was “fully investigated” and a file was passed on the Department of Public Prosecutions for review.

He added: “The suspect resides in another jurisdiction and there is currently insufficient grounds to satisfy an extradition request — as such the matter is held in abeyance.”

Police also confirmed the alleged attacker has not returned to Bermuda since November 2015.