The towboat David Dunnigan capsized and sank on the Ohio River near Golconda, Illinois. The David Dunnigan was working near mile marker 897.5 on the flooded river when it flipped over and sank. No reports of injuries. The Coast Guard reports the vessel was swept downstream and its exact location was unknown. The David Dunnigan had some 3,000 gallons of diesel fuel on board at the time. The Coast Guard has launched an investigation into the incident.