TINICUM, Pa. (AP) -- Authorities say the body of a 23-year-old man who jumped into the Delaware River during an outing in Tinicum Township has been recovered. Philly.com reports that Robert Miller of Glen Mills did not resurface after jumping into the water around 3:30 a.m. Sunday at the Golden Point Marina & Yacht Club. Police say his body was recovered around 11 a.m. by the Chester Police Department's dive team. The cause of death was not immediately known.