CNN Health: The body oil spill from BP’s Black Sea oil well is being investigated as an accident, a lawsuit filed in the U.S. District Court for the District of Columbia by the Environmental Defense Fund alleges.

The suit says the spill occurred as the company was preparing to drill a new well in the Gulf of Mexico, a major oil and gas resource.

The suit seeks unspecified damages, including a prohibition on BP from further activities in the region.

The lawsuit was filed Thursday and was first reported by CNN.