Former US president Jimmy Carter was taken to hospital on Monday for a brain procedure, the Carter Center announced.
The 95-year-old "was admitted to Emory University Hospital this evening for a procedure to relieve pressure on his brain, caused by bleeding due to his recent falls," the center said in a statement.
"President Carter is resting comfortably, and his wife, Rosalynn, is with him," it said.
He was taken to hospital for treatment after suffering a fractured pelvis due to a fall in October.
President from 1977 to 1981, Mr Carter also injured his head in a fall earlier in the month but turned up the next day to volunteer at a Habitat for Humanity site with a black eye and a bandage covering 14 stitches.Mr Carter, a former peanut farmer, Navy officer and Georgia governor, defeated Republican President Gerald Ford in 1976 to become the nation's 39th president, serving a single four-year term in the White House.
Jimmy Carter works on a Habitat for Humanity project. Source: AAP
His presidency was overshadowed by an economic recession, an energy crisis and the taking of US hostages by Iran, but he also played a leading role in brokering the Camp David Accords leading to an Egypt-Israel peace treaty.
He lost his 1980 re-election bid to Republican Ronald Reagan.
After leaving office in 1981, Mr Carter went on to become an international fixture and a noted humanitarian.He won the Nobel Peace Prize in 2002 for his efforts toward finding peaceful solutions to international conflicts, advancing democracy and human rights and promoting economic and social development.
Jimmy Carter during his presidency. Source: Getty
He and his wife founded the Carter Center in 1982 to carry on their international and humanitarian work.
Mr Carter has lived longer after leaving the White House than any former president in US history.
Additional reporting: AAP, AFP