A 20-year-old man was shot in the back Sunday night in the Geiger Park area of Ewa Beach, and three suspects remained at large, Honolulu police said. District 8 officers responded to the area at about 10:05 p.m. after receiving reports of a shooting, police said. Officers found the man suffering from a gunshot wound to his upper back. Police said three unknown male suspects, dressed primarily in black, were seen fleeing the area on foot. Anyone with information about the shooting is asked to call 911 or CrimeStoppers at (808) 955-8300.