New details emerge from Cuomo's 6th accuser, claiming he 'aggressively groped her in a sexually charged manner'

• New details emerged from the sixth woman to accuse New York Gov. Andrew Cuomo of sexual harassment.
• The unnamed female staffer alleged the governor fondled her in his private residence last year.
• Cuomo denied the new allegations in a statement to Insider Wednesday night.

The sixth woman to accuse New York Gov. Andrew Cuomo of sexual harassment - who is currently a staffer - said he groped her in the executive mansion last year, according to the Albany Times Union.

The newspaper published new details about the alleged incident Wednesday, describing the most serious allegation against the third-term Democrat yet.

The unnamed woman alleged Cuomo "aggressively groped her in a sexually charged manner" after she had been summoned to the governor's private residence under the pretext of helping him solve a technology issue, a person with direct knowledge of the woman's claims told the Times Union.

Once alone, the source said Cuomo closed the door, then reached under the unnamed aide's shirt and allegedly began to fondle her. She reportedly told him to stop.

The source, who told the newspaper they were not authorized to comment on the matter publicly, also said the unnamed staffer alleged that the governor was frequently flirtatious and said the mansion incident was not the only time he touched her.

Cuomo issued a statement to Insider Wednesday night denying the new allegations.

"As I said yesterday, I have never done anything like this. The details of this report are gut-wrenching. I am not going to speak to the specifics of this or any other allegation given the ongoing review, but I am confident in the result of the attorney general's report," he said.

The woman reportedly revealed her story in the governor's Executive Chamber on March 3, as she and fellow staff members watched Cuomo give his first news conference since the flood of allegations had begun.

Insider reported that the woman disclosed the incident in an internal complaint to her supervisors, and that complaint had been referred to the New York Attorney General Tish Jame's office, where an investigation into Cuomo's conduct is underway.