Former U.S. President George H.W. Bush was released Sunday from a Maine hospital, where he had received four days of treatment after breaking a bone in his neck in a fall at his summer home, his spokesman said.

Bush, 91, fell Wednesday in his family’s vacation home in coastal Kennebunkport and was taken to Maine Medical Center in Portland.

Spokesman Jim McGrath on Twitter described the former president as “very grateful” for his care.

In a Thursday press conference, his physician said that Bush, did not sustain any spinal damage from the fall, though it left him with a cracked C2 vertebrae.

Bush, who has Parkinson’s disease, was last hospitalized for a week in December due to breathing difficulties.

He served as vice president during Ronald Reagan’s two White House terms before being elected president in 1988.

Bush is the father of former President George W. Bush and former Florida Gov. Jeb Bush, who is seeking the 2016 Republican presidential nomination.