Former New York Mayor Ed Koch is back in the hospital for the third time in recent months.
Spokesman George Arzt says Koch went to the hospital around 10 p.m. Saturday with swollen ankles. He says tests on Sunday showed Koch also has some fluid in his lungs.
Arzt says Koch "sounded great'' when they spoke Sunday.
It's unclear when he will be released.
Arzt says Koch didn't look well at lunch with former aides on Saturday afternoon. He was at dinner with friends Saturday night, including a doctor who recommended he seek medical attention.
Koch was hospitalized in December with a respiratory infection and in September with anemia.