The Manhattan District Attorney's Office says it has launched an investigation into sexual misconduct allegations against US congressman Eric Swalwell. Four women have accused him of misconduct ranging from sexual harassment to rape, with claims including an alleged incident in New York. Swalwell, a leading contender in California's governor race, denies the allegations, vowing to defend himself with 'facts.'

In urging accusers to come forward, the district attorney's office emphasized that their specially trained prosecutors, investigators, and counselors are prepared to help in a trauma-informed, survivor-centered manner. The investigation was announced shortly after Swalwell characterized the allegations as 'false.'

Representatives for Swalwell did not immediately respond to inquiries. The allegations surfaced publicly just as Swalwell was gaining traction in the race to succeed outgoing Governor Gavin Newsom. The claims involve a former staff member who accused Swalwell of inappropriately soliciting her and assaulting her on two occasions.

The investigation has already impacted Swalwell’s political support, as prominent figures in his corner have started pulling their endorsements. The allegations come at a critical moment in a tight primary race with voters soon expected to receive ballots ahead of the June election.