WASHINGTON (AP) — Supreme Court Justice Samuel Alito fell ill at an event in Philadelphia last month and was treated for dehydration before returning home to suburban Washington, the court’s spokeswoman said Friday.

Alito’s illness did not require an overnight hospital stay and he was back on the bench the following Monday, spokeswoman Patricia McCabe said in a statement.

Alito was an active questioner during arguments that day in an important case about mailed ballots and participated in all the court’s hearings over the ensuing two weeks.

Alito, who turned 76 on Wednesday, is the second-oldest member of the court, after 77-year-old Justice Clarence Thomas.

The episode was first reported by CNN, which also said the treatment was administered at a Philadelphia hospital. The court did not say where Alito had been taken.

The incident is the latest example of the justices’ reticence to discuss their health, at least until the news somehow leaks.

In 2020, the court confirmed that Chief Justice John Roberts had spent a night in the hospital after a fall that required stitches in his forehead, only after the Washington Post reported it first.

Alito was driven by his security detail from Washington to what CNN said was a dinner following a Federalist Society panel that looked at his 20 years on the court.

When he didn’t feel well in the evening, “he agreed with his security detail’s recommendation to see a physician before the three-hour drive home” to northern Virginia, McCabe said. He was given fluids for dehydration, she said.

While the justice has not said anything about retirement, speculation has swirled that Alito might soon step down, which would give President Donald Trump the chance to appoint a fourth justice, after the three who were confirmed during his first term.

While Alito is young by Supreme Court standards, he might not want to stay around and gamble on the possibility of Democrats flipping the Senate in the November elections and seeing a Democrat capture the White House two years later.

Retiring in the summer would allow Trump to name a similarly conservative but much younger replacement who would almost certainly win confirmation from the Republican-led Senate.