The U.S. Coast Guard says about 88,200 gallons of oil have leaked from a Shell flow line into the Gulf of Mexico about 90 miles off the coast of Louisiana, according to AP. Chief Petty Officer Bobby Nash says the leak has been secured and cleanup crews will be dispatched. The leak was reported Thursday. Officials were investigating the cause of the leak. Officials say the oil leaked from a line connecting four wells in the Green Canyon area of the Gulf to Shell's Brutus platform and has left a miles-long sheen. The Bureau of Safety and Environmental Enforcement says there have been no reports of injuries. Officials say Shell Offshore Inc. reported the spill and also said it had shut the wells flowing into the line.