Justice Ruth Bader Ginsburg has been hospitalized with an infection caused by a gallstone.
Ginsburg, 87, underwent non-surgical treatment for a benign gallbladder condition called acute cholecystitis on Tuesday afternoon at Johns Hopkins Hospital in Baltimore, the Supreme Court said in a statement.
She is now 'resting comfortably' and expects to stay in the hospital for 'a day or two', the court said.
The justice plans to participate in the oral argument teleconference remotely from the hospital tomorrow - just as she did on Monday and Tuesday.
Ginsburg first sought treatment at Sibley Memorial Hospital in Washington, DC, on Monday following oral arguments.
Outpatient tests confirmed she was suffering from a gallstone that had migrated into her cystic duct, blocking it and causing an infection.