Senator Lindsey Graham, a Republican stalwart from South Carolina, has died, following a “brief and sudden illness,” his office said in a statement sent early Sunday. He was 71.

According to the statement, which was posted to Graham’s social media accounts, “On the evening of Saturday July 11, U.S. Senator Lindsey Graham passed away from a brief and sudden illness.”

“Senator Graham’s family appreciates prayers at this time and asks for privacy during this incredibly difficult period.” Additional details were not provided.

Donald Trump responded to his death early Sunday, writing on Truth Social, “Senator Lindsey Graham, one of the greatest people and Senators I have ever known, is dead! He was always working, and was a true American Patriot. Lindsey will be greatly missed!!! DETAILS AND ARRANGEMENTS TO FOLLOW. So sad!”

In a statement also posted to social media, Senate Majority Leader John Thune wrote “My heart is heavy this morning to learn of the passing of my friend and colleague, Senator Lindsey Graham.”

“He was a strong advocate for the United States and a strong ally to freedom-loving countries across the globe,” he continued. “He believed in the might of America to achieve good in the world and dedicated his life to advancing that cause…His influence on the federal judiciary, our national defense, and his beloved South Carolina will be felt for generations.”

This story is developing…