The House Ethics Committee is questioning witnesses about allegations that Rep. Matt Gaetz used illicit drugs as a member of Congress, multiple sources tell ABC News.

Rep. Matt Gaetz's deposition in a civil defamation case brought by a longtime friend has been moved to June after initially being set for April 5, sources tell ABC News.

Rep. Matt Gaetz has been served a subpoena to sit for a deposition in a civil lawsuit that involves allegations he had sex with a 17-year old-girl, sources tell ABC News.

The House Ethics Committee has issued a subpoena for the testimony of a former girlfriend of Rep. Matt Gaetz as part of an ongoing investigation.

Joel Greenberg, a one-time close friend of Rep. Matt Gaetz, is cooperating with the House Ethics Committee probe into the Florida congressman, sources tell ABC News.

The House Ethics Committee has reached out to a former girlfriend of Rep. Matt Gaetz seeking an interview amid the committee's ongoing investigation, a source said.

House investigators probing Rep. Matt Gaetz have reached out to Joel Greenberg, a one-time close friend of Gaetz who pleaded guilty to federal charges, sources say.

Rep. Matt Gaetz, R-Fla., succeeded Tuesday where no Republican has before: He nearly single handedly ousted a sitting House speaker.

Matt Gaetz has introduced a motion to remove Kevin McCarthy from the House speakership, setting up a dramatic vote over the future of the chamber's Republican majority

Florida woman arrested for throwing wine at Matt Gaetz

The DOJ has informed lawyers representing witnesses that it will not bring charges against Rep. Matt Gaetz after a sex-trafficking probe into the Florida congressman.

As the probe into possible sex trafficking allegations against Rep. Matt Gaetz continues, new financial filings show his campaign's fundraising has been dwindling.

Possible witness in sex trafficking probe involving Matt Gaetz takes plea.

Rep. Matt Gaetz's ex-girlfriend was seen entering a courthouse where sources say a grand jury is conducting a sex trafficking investigation involving the congressman.

Former tax collector Joel Greenberg, a one-time associate of Rep. Matt Gaetz, has reached an agreement to pay back Seminole County over $1.8 million in restitution.

Two top DOJ prosecutors were added several months ago to the ongoing federal probe examining sex trafficking allegations against Rep. Matt Gaetz, two sources said.

A judge has agreed to delay the sentencing of former Seminole County tax collector Joel Greenberg as Greenberg cooperates with the probe into Florida Rep. Matt Gaetz.

Florida Rep. Matt Gaetz's one-time wingman has been steadily providing investigators with potential evidence that could implicate Gaetz in a federal probe, sources say.

As Rep. Matt Gaetz faces a probe into alleged sex trafficking, a campaign disclosure shows how the congressman is spending the funds that he's raised amid the scandal.

The federal probe into sex trafficking allegations involving GOP Rep. Matt Gaetz has engulfed the tight-knit Central Florida political scene, sources tell ABC News.

A one-time close ally of Rep. Matt Gaetz will plead guilty to multiple federal crimes including sex trafficking of a minor and has agreed to cooperate with investigators.

The House Ethics Committee said Friday it would open a bipartisan investigation into the wide-ranging allegations against Rep. Matt Gaetz.

An associate of Rep. Matt Gaetz who is currently facing sex charges is considering a plea deal that could involve him cooperating with the Gaetz probe, prosecutors said.

During the final weeks of the Trump administration, Rep. Matt Gaetz asked the White House for a blanket presidential pardon that ultimately was not granted, say sources.

Gaetz previously denied having a relationship with a 17-year-old.

Rep. Matt Gaetz's communications director Luke Ball resigned amid a federal investigation into allegations regarding Rep. Gaetz's sexual relationships.

The federal investigation into Florida Rep. Matt Gaetz is scrutinizing the congressman's conduct not only in Florida but in other states too, sources tell ABC News.

Conservative rising star Matt Gaetz finds himself gaining attention he didn't seek, as the Justice Department looks into potential violations of sex trafficking laws.