Dip in Shell shares after oil sheen discovered in Gulf

New Orleans, La. - Shell Oil sees a dip in shares after a light oil sheen was spotted between two major production sites in the Gulf of Mexico.

The company contained the 10-square mile slick, which is about 130 miles southeast of Louisiana.

Shell says it does not know the source of the slick and says it has found no evidence it came from the company's Mars or Ursa wells.

Shares in the Royal Dutch Shell fell close to five percent in European trading.