By Steve Almasy, CNN
updated 4:03 PM EST, Fri February 1, 2013
(CNN) -- Ed Koch, the brash former New York City mayor who typically greeted constituents with a "How'm I doin'?" died Friday at the age of 88, his spokesman said.
Koch died of congestive heart failure, spokesman George Arzt said. The former mayor felt very tired Thursday morning and was admitted to the intensive care unit, Artz said. Koch lost consciousness that afternoon and passed away around 2 a.m. Friday.