The beach at Dewey Beach has been closed after the discovery of tarballs that were first found in Delaware Bay.
Dewey Mayor Dale H. Cooke announced the closing via social media.
Cook confirmed that Dewey Beach now has coagulated tarballs on the beach.
The Delaware Department of Natural Resources has been notified and will work on cleaning the beach along with areas in other coastal towns.
Cooke noted that DNREC has a Public Hotline number if you have any information regarding the spill. The number is 1-800-662-8802.
Crews numbering more than 100 have been dispatched to beach areas to begin the clean-up that includes a vessel that will remove an oily sheen from the water.
The oily glop was first found at Broadkill Beach near the end of Delaware Bay north of Lewes, but has now reached Atlantic beaches.
The source of the spill has not been determined, although oil tankers have been largely ruled out.
Gov. John Carney visited the spill area on Friday.
Clean-up crews include contractors, DNREC, the Coast Guard, Tri-State Bird Rescue, Newark, and DelDOT.
Individuals are asked to report the presence of the tarballs, but are advised to not handle them.