Senator Lindsey Graham of South Carolina died aged 71, on Saturday, from a heart ailment caused by the hardening of the arteries.

Graham's death sparks questions on cardiac arrest that is caused by an electrical malfunction in the heart that disrupts its pumping action. The heart then stops beating.

Lindsey Graham, a politician and attorney serving as the senior United States senator from South Carolina, a seat he had held since 2003, has died.