U.S. Rep. Katie Hill, an early leader among first-term members of the U.S. House and the first openly bisexual person elected to the House, resigned Sunday night. In a letter posted at 7 p.m. ET Sunday on Twitter, Hill said she was “fearful” of continued “private photos of personal moments” being “weaponized” against her by “my abusive husband and the brutality of hateful political operatives.”

The House Committee on Ethics announced October 23 that it had become “aware of public allegations that Representative Katie Hill may have engaged in a sexual relationship with an individual on her congressional staff….” U.S. House Rule XXIII, Clause 18(a) under the House Code of Official Conduct states that a member of Congress “may not engage in a sexual relationship with any employee of the House who works under the supervision of the Member … or who is an employee of a committee on which the Member ….”

Hill denied having sexual relations with a man on her Congressional staff but acknowledged having an “inappropriate” relationship with a woman on her campaign staff. House rules do not govern candidates for office, only members of Congress.

Within minutes of Hill’s announcement Sunday night, House Speaker Nancy Pelosi issued a statement:

“Congresswoman Katie Hill came to Congress with a powerful commitment to her community and a bright vision for the future, and has made a great contribution as a leader of the Freshman Class. She has acknowledged errors in judgment that made her continued service as a Member untenable. We must ensure a climate of integrity and dignity in the Congress, and in all workplaces.”

California Governor Gavin Newsom has not yet announced his choice for an interim replacement for Hill. Some news reports speculate he may schedule a special election to fill the vacancy on March 3, when California holds its presidential primary.

Hill was part of the Speaker’s “leadership team” and vice-chair of the House Committee on Oversight, which was involved in impeachment proceedings against President Trump.