An investigation is underway to determine the cause of an oil leak that has resulted in a spill of over a million gallons of crude oil along the southeast coast of New Orleans. The U.S. Coast Guard estimates that 1.1 million gallons of oil have been spilled. The spill was discovered on Thursday and a 67-mile pipeline was closed. Efforts are being made to recover the oil on the surface. Remotely operated vehicles have been deployed to survey the pipeline, but no source has been found yet. There have been no reports of injuries or shoreline impacts. The cause of the spill is being investigated by multiple agencies.