KENNEBUNKPORT, Maine — Former President George H.W. Bush, at 91 the oldest living former president, was being treated at a hospital early Thursday for a broken bone in his neck suffered in a fall.

Bush, the 41st U.S. president, fell on Wednesday at his summer home in Kennebunkport but was doing OK and was wearing a neck brace, a Bush spokesman said.

“41 fell at home in Maine today and broke a bone in his neck,” spokesman Jim McGrath tweeted on Wednesday night. “His condition is stable — he is fine — but he’ll be in a neck brace.”

Bush was being treated at Portland’s Maine Medical Center, where a children’s hospital is named for his wife. The medical center confirmed his condition was stable but said it was premature to speculate about when he’ll be released. It said he would be there at least overnight.

Bush, who has a form of Parkinson’s disease and uses a motorized scooter or a wheelchair for mobility, has suffered other recent health setbacks.

He was hospitalized in Houston in December for about a week for shortness of breath. He spent Christmas 2012 in intensive care at the same Houston hospital for a bronchitis-related cough and other issues.