Report: Graham’s Possible Cause of Death Revealed

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

Emergency responders were dispatched to Graham’s Capitol Hill residence Saturday night after receiving a call reporting a possible “cardiac arrest,” according to police scanner audio obtained by NBC News.

Photographs reviewed by NBC News show paramedics transporting an individual on a stretcher from the home to a waiting ambulance.

Police vehicles and fire trucks were also present at the scene.

Graham was serving as chairman of the Senate Budget Committee and was running for a fifth six-year term in the Senate this November.

One of the chamber’s most recognizable members, he was a leading voice within his party on defense and foreign policy issues.

A senior Graham aide told NBC News early Sunday that there had been no indication the senator was experiencing health problems before his death.

Graham had been scheduled to appear on NBC News’ Meet the Press Sunday morning, a program on which he had been a frequent guest, making 63 appearances over the years.