NEW ORLEANS -- The U.S. Coast Guard shut down the Mississippi River late Saturday night as it tried to salvage a tugboat that sank.
The tug, C-Pec, sank just up from the Head of Passes, also known as the Bird's Foot Delta, where the river splits into Southwest Pass, Pass a Loutre and South Pass.
The Coast Guard says the tug was carrying four 500 gallon tanks of fuel.
They have been recovered but produced a sheen on the river.
The Coast Guard says it was attempting to identify an oil spill response organization to put together a salvage plan.
Officials say they still don't know why the tug sank.