Senate Republican leader Mitch McConnell suffered a concussion after a fall at a local hotel and remains hospitalized “for a few days of observation and treatment,” a spokesman said Thursday.

The Kentucky senator, 81, was at a Wednesday evening dinner for the Senate Leadership Fund, a campaign committee aligned with him, when he tripped and was admitted to the hospital, his office said. The dinner was at the Waldorf Astoria Washington DC, formerly the Trump International Hotel, Washington D.C.

Spokesman David Popp said McConnell is being treated for a concussion and “is grateful to the medical professionals for their care and to his colleagues for their warm wishes.”

In 2019, the GOP leader tripped and fell at his home in Kentucky, suffering a shoulder fracture. At the time, he underwent surgery to repair the fracture in his shoulder. The Senate had just started a summer recess, and he worked from home for some weeks as he recovered.

First elected in 1984, McConnell in January became the longest-serving Senate leader when the new Congress convened, breaking the previous record of 16 years.

The taciturn McConnell is often reluctant to discuss his private life. But at the start of the COVID-19 crisis he opened up about his early childhood experience fighting polio. He described how his mother insisted that he stay off his feet as a toddler and worked with him through a determined physical therapy regime. He has acknowledged some difficulty in adulthood climbing stairs.

Senate Majority Leader Chuck Schumer, D-N.Y., said on the Senate floor Thursday morning that he had called McConnell and spoken with his staff “to extend my prayers and well wishes.”

“I joined every single one of my colleagues in wishing Leader McConnell a speedy and full recovery,” Schumer said.

The Senate, where the average age is 65, has been without several members recently due to illness.

Sen. John Fetterman, D-Pa., 53, who suffered a stroke during his campaign last year, was expected to remain out for some weeks as he received care for clinical depression. And Sen. Dianne Feinstein, D-Calif., 89, said last week that she had been hospitalized to be treated for shingles.

The Democratic absences have proven a challenge for Senate Majority Leader Chuck Schumer, D-N.Y., who is already navigating a very narrow 51-49 majority.

The Republicans, as the minority party, have had an easier time with intermittent absences. It is unclear if McConnell will be out on Thursday and if that would have an effect on scheduled votes.