Here’s what happened.

FBI Director Kash Patel confirmed Sunday that the bureau is assisting local authorities following the sudden death of Sen. Lindsey Graham, making federal resources available as officials continue reviewing the circumstances surrounding the longtime South Carolina Republican’s passing.

The announcement came as tributes poured in for Graham, whose unexpected death shocked Washington and prompted an outpouring of condolences from leaders across the political spectrum.

Kash Patel Confirms FBI Assistance

Patel shared a statement on X expressing sympathy for Graham’s family while confirming the FBI’s role in the ongoing investigation.

Patel described Graham as a dedicated public servant, a steadfast champion of America’s interests, and a patriot who devoted his career to serving both South Carolina and the nation.

He added that the FBI has made every available resource accessible to local authorities as they continue their work.

“Our prayers are with his family, loved ones, colleagues, and all those who knew him during this devastating time,” Patel said.

At this time, officials have not announced any evidence suggesting criminal activity, and authorities have not indicated they suspect foul play.

Lindsey Graham Dies After Brief Illness

Graham, 71, died Saturday evening after what his office described as a “brief and sudden illness.” His staff announced the news early Sunday and asked the public to respect the family’s privacy as they mourn.

“Senator Graham’s family appreciates prayers at this time and asks for privacy during this incredibly difficult period,” his office said in a statement.

The four-term senator spent decades representing South Carolina in Congress and became one of the Republican Party’s leading voices on national security, military affairs and foreign policy.

Emergency Responders Called To Graham’s Home

According to police scanner audio obtained by NBC News, emergency personnel were dispatched to Graham’s Capitol Hill residence Saturday night after receiving a report of a possible cardiac arrest.

Photographs published by the outlet showed paramedics transporting an individual from the home on a stretcher while police officers and firefighters remained at the scene.

The Hill reported it contacted the FBI, the U.S. Capitol Police and the Metropolitan Police Department seeking additional information about the investigation. As of Sunday, no agency had announced evidence of suspicious circumstances.

Graham Returned From Ukraine Hours Earlier

In the days before his death, Graham had been traveling overseas while the Senate was in recess.

The South Carolina Republican visited Ukraine, where he met Friday with Ukrainian President Volodymyr Zelensky as Russia’s invasion continued.

A longtime advocate of a strong U.S. military and continued support for Ukraine, Graham also worked with a bipartisan group of senators and the White House to finalize legislation that would impose additional sanctions on Russia.

The trip highlighted Graham’s continued involvement in national security issues, one of the defining priorities of his Senate career.

Trump Describes Final Conversation

President Donald Trump said he spoke with Graham on Saturday evening shortly after the senator returned to Washington.

According to Trump, Graham sounded somewhat tired after his overseas travel but otherwise appeared to be doing well.

“He sounded a little tired, but perfect. But a little bit tired, he had a right to be,” Trump said during an interview on NBC’s Meet the Press.

Trump has since joined numerous current and former lawmakers in honoring Graham’s decades of public service.

Investigation Remains Ongoing

Authorities have not released additional information about the cause of Graham’s death, and investigators have not announced any evidence of foul play.

For now, the FBI is assisting local authorities as they continue reviewing the circumstances surrounding the senator’s passing.

Graham leaves behind a legacy spanning more than three decades in public office, earning a reputation as one of the Senate’s most influential Republicans on defense, foreign policy and judicial issues. His sudden death marks the end of a career that shaped many of the nation’s biggest political and national security debates.