Federal court filings cited by Fox News say former Arizona senator Kyrsten Sinema testified that she had a sexual relationship with her then-married security guard, Matthew Ammel, while she was in office. The disclosures form part of a civil lawsuit brought by Ammel’s former wife, Heather Ammel, who alleges that Sinema contributed to the breakdown of their marriage.

Heather Ammel is pursuing an alienation-of-affection claim in North Carolina, a cause of action available in only a small number of US states. She alleges that Sinema’s relationship with Matthew Ammel ended the couple’s 14-year marriage; the article describes the filings as including Sinema’s acknowledgement of repeated sexual encounters. The claims are allegations in ongoing civil litigation and have not been independently established by a court.