The diver injured working underneath the IP Casino barge Tuesday died Thursday night.
According to Coroner Gary Hargrove, 22-year-old Robert J. Harris of Biloxi died at Biloxi Regional Hospital.
Harris's breathing apparatus malfunctioned when he was under the barge using vacuum hoses to dredge silt. After ten minutes of searching, he was pulled out by co-workers.
Federal investigators have been called to look into the diving accident.