Gov. Haley Barbour said oil has nearly reached Petit Bois Island, calling it "the first, not the last."
The governor's comments came during a conference call to update the media on the ongoing efforts to stem the oil that has leaked into the Gulf of Mexico from the Deepwater Horizon oil rig disaster.
The island is located south of Jackson County.
Barbour said at 9:15 a.m., a strand of caramel-colored oil was spotted at the western end of Petit Bois, the last barrier island to the east near the Mississippi-Alabama border.
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He said the strand of oil was only about a meter wide, but it was about two miles long.
"Our belief is that it's probably broke off a patch south of Horn Island on Sunday and it has been marked with buoys by the Coast Guard late Sunday and we believe the main parts of those patches are three to five miles south of Dauphin Island, Ala.," Barbour said.
Sunherald.com will update this story as details become available.