A worker has died after falling into the Duwamish River in South Seattle. Seattle firefighters were called to the scene off of East Marginal Way South at Dawson Street at 5 a.m. Thursday. The industrial area has businesses along the Duwamish Waterway. The victim fell into the water while working on a barge. Seattle fire later confirmed that the victim died. It is not yet known where the worker was employed, but Seattle police officers were seen coming out of a cement company.