US President-elect Donald Trump expressed condolences following the death of former US President Jimmy Carter at the age of 100.

"I just heard of the news about the passing of President Jimmy Carter. Those of us who have been fortunate to have served as President understand this is a very exclusive club, and only we can relate to the enormous responsibility of leading the Greatest Nation in History," Trump wrote in a post on his Truth Social paltform.

"The challenges Jimmy faced as President came at a pivotal time for our country and he did everything in his power to improve the lives of all Americans. For that, we all owe him a debt of gratitude," he added.

"Melania and I are thinking warmly of the Carter Family and their loved ones during this difficult time. We urge everyone to keep them in their hearts and prayers," concluded Trump.