(Portland, OR) -- An investigation is ongoing into the discovery of a body in the Columbia River. The Multnomah County Sheriff's Office says a boater found the body floating in the water between Lemon Island and Broughton Beach yesterday. Crews have recovered the body, and the medical examiner is working to determine the victim's identity and cause of death. Last weekend, a man died after falling off a boat and drowning in the same area of the river near Lemon Island. His body was never recovered. Police are not saying whether they believe the body could be that same victim.