Florida Rep. Matt Gaetz's ex-girlfriend reportedly on Wednesday appeared before a federal grand jury investigating him for sex crimes. According to NBC News, his ex, whose name was withheld to protect her privacy, has been in talks with federal prosecutors for months to avoid prosecution for obstruction of justice in return for testifying in an investigation into whether he paid for sex with a 17-year-old. NBC also reported that prosecutors were investigating three separate crimes: Sex trafficking; violating the Mann Act, which bans taking prostitutes across state lines; and obstructing justice. Investigators are reportedly examining a phone call between Gaetz, his ex and another woman - who recorded the call and was cooperating with federal investigators - to establish whether it amounted to obstructing justice. Gaetz came to the notice of investigators through his friendship with former Seminole County tax collector Joel Greenberg (bottom right), who pleaded guilty to six counts of fraud and sexual offenses. Gaetz, a conservative firebrand and prominent supporter of former President Donald Trump, has not been charged with any crime and has denied all the accusations. Pictured bottom left with his wife Ginger Luckey who he married in August last year.