The Manhattan District Attorney’s Office in New York has launched an investigation into a sexual assault allegation against Rep. Eric Swalwell, D-Calif., NBC News confirmed Saturday.

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Multiple women in the last two days have come forward alleging that Swalwell sexually assaulted or harassed them while serving in Congress, including one who alleged he assaulted her in New York. Swalwell has denied the allegations.

A spokesperson for the district attorney’s office urged “survivors and anyone with knowledge of these allegations to contact our Special Victims Division at 212-335-9373. Our specially trained prosecutors, investigators, and counselors are well-equipped to help you in a trauma-informed, survivor-centered manner.”

On Friday, the San Francisco Chronicle reported that one woman said she had sexual encounters with the congressman when he was her boss and alleged that he twice sexually assaulted her when she was too intoxicated to consent. One of those incidents, the woman alleged, took place in New York in 2024.

And later Friday, CNN reported on sexual misconduct allegations against Swalwell from three additional women, including one who said he kissed her without her consent in public and two others who said the congressman sent them unsolicited photos or videos of his penis.

NBC News has not independently corroborated their stories.

CNN was the first to report of the Manhattan District Attorney’s Office investigation.

Representatives for Swalwell’s office and campaign did not immediately respond to requests for comment.

Swalwell on Friday denied the allegations in a video posted to X, telling viewers: “These allegations of sexual assault are flat false. They’re absolutely false. They did not happen. They have never happened, and I will fight them with everything that I have.”

The CNN and San Francisco Chronicle stories were reported just weeks before California voters are set to begin voting in the state’s primary for governor, where Swalwell has been a leading candidate in a crowded field of Democrats, including former Rep. Katie Porter, businessman Tom Steyer and former U.S. Health Secretary Xavier Becerra.

On Friday and Saturday, multiple high-profile figures and groups rescinded their previous endorsements of Swalwell, including the California Federation of Labor Unions and the California chapter of the Service Employees International Union.

Democratic leaders in the House, including House Minority Leader Hakeem Jeffries, D-N.Y., Democratic Whip Katherine Clark, D-Mass., and Democratic Caucus Chair Pete Aguilar, D-Calif., on Friday called the allegations against Swalwell “disturbing” and urged him to “immediately end his campaign to be California’s next Governor.”

On Saturday, two Republican congresswomen vowed to seek punishment against against Swalwell in the wake of the sexual assault allegations.

Rep. Lauren Boebert, R-Colo., said in a post on X that she plans to force a floor vote this week on a resolution to censure Swalwell, which would require a simple majority to succeed.

And Rep. Anna Paulina Luna, R-Fla., said in a post on X that she plans to introduce a resolution to expel Swalwell from Congress. That resolution would have a higher threshold for passage, with two-thirds of the chamber needing to vote in favor.