Preliminary Cause of Death Released for Senator Lindsey Graham Following Sudden Passing

The District of Columbia Medical Examiner has released preliminary findings on the cause of death for U.S. Senator Lindsey Graham of South Carolina, who passed away Saturday evening at age 71. The examiner determined the senator likely died from an aortic dissection resulting from arteriosclerotic cardiovascular disease, a condition involving plaque buildup in arteries that can lead to tears in the aorta's wall.

Emergency responders were dispatched to Graham's Capitol Hill residence shortly before 8:30 p.m. Saturday following a report of chest pain. Dispatch audio reviewed by outlets indicated a caller en route from Baltimore reported the front door might be unlocked, but first responders found it dead-bolted and forced entry after no response. CPR was initiated on a man in his 70s experiencing cardiac arrest, and Graham was transported to George Washington University Hospital, where he was pronounced dead at 10:23 p.m.

An autopsy was conducted Sunday. The death certificate remains pending until toxicology and microscopic testing are finalized, which could take weeks. Graham's office had described the death as resulting from a "brief and sudden illness" and requested privacy for his family.

Graham had recently returned from a trip to Ukraine, where he met with President Volodymyr Zelenskyy. He spoke with President Donald Trump around 6:30 p.m. Saturday, mentioning fatigue from travel but otherwise appearing fine, according to Trump. The senator was scheduled for media appearances Sunday before his passing.

Graham, a Republican who represented South Carolina in the Senate since 2003, was a prominent voice on national security and foreign policy. He served in the Air Force and built a reputation as a hawkish advocate for strong U.S. alliances, military readiness, and support for partners including Israel and Ukraine. Tributes poured in from across the political spectrum, with Trump calling him a "true American Patriot" who worked tirelessly for the country. Senate colleagues and international leaders highlighted his dedication and impact.

FBI Director Kash Patel stated the bureau is assisting local authorities with every necessary resource. Law enforcement officials noted the investigation includes full testing, amid broader scrutiny of lawmakers' health transparency.

Graham's death leaves a vacancy in the Senate, where Republicans hold a narrow majority. South Carolina Governor Henry McMaster will appoint a temporary replacement. The senator, who never married and had no children, is survived by his sister Darline Graham Nordone. Flags nationwide were ordered lowered to half-staff in his honor through the coming week.