Police officers responded to a 911 call of an assault in progress near West 131 Street and Amsterdam Avenue at around 5:30 a.m.
When the officers arrived they found the two men had been shot.
EMS transported the 25-year-old man to St. Luke's Hospital where he was pronounced dead, while the 28-year-old refused medical attention at the scene.
Police have made no arrests so far, and the investigation is ongoing.