Prominent US Senator Lindsey Graham, a key ally of President Donald Trump, died aged 71 following a "brief and sudden illness," his office said on Sunday.

The South Carolina senator’s office said the 71-year-old died after a “brief and sudden illness.”

South Carolina Senator Lindsey Graham, a close aide of US President Donald Trump, has died.

South Carolina Senator and US President Donald Trump's close aide passed away on Saturday at the age of 71.