BANGOR (AP) – Red tide is forcing the closure of more clam flats in eastern Maine, and officials are warning that even more areas could be shut down as the toxic algae continues to spread.

The Department of Marine Resources on Tuesday closed areas from Cutler to the Canadian border, including most of Cobscook Bay, to clam harvesting.

Even so, some southern coastal clam flats are being reopened. As of Tuesday afternoon, clamming is again allowed again in the Harpswell, West Bath and Phippsburg areas.