New information showing someone may have seen the man was in trouble and tried to help. Fox 29s dave kinchen is live at coast guard headquarters in south philadelphia tonight. Dave . Iain authorities tell us that the victim jumped into the water at the mouth of schuylkill and delaware rivers. Were told that a passerby on a jet ski saw the person in trouble. Tried to floe throw out a live preserver but victim went under. Fox 29 was there as the coast guard and u. S. New Jersey State Police divers work the river between National Park new jersey and fort mifflin in philadelphia philadelphia. They were looking for the body avenue missing 43yearold swimmer Authorities Say the body was located around 8 30 the coast guard says the swimmer ventured out on to the water with 18foot boat with one another person before leaving the boat and never returning. Theyred whoing on everybody all the ships and everything. I guess theyre concentrating here on the area. Reporter many spent sunday evening wat