Thomas A. Belmont, 60, of 1 Forbell Drive, was spotted by children at about 1:30 p.m. Friday on the public coastal park, said Lt. Kraig Gray.
The children alerted adults, who contacted police, Gray said.
Belmont was observed on the rocks in the shellfishing area on the east side of Greenwich Point, Gray said.
Belmont was released on a promise to appear in state Superior Court in Stamford on Thursday.
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