PITTSFIELD, NH (CBS) – An ISIS flag appeared in a local neighborhood hanging from a fence near the town dam in Pittsfield, New Hampshire.

Police say they immediately removed the flag from the fence which was on state property.

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Authorities say they have questioned a person of interest and are now working with the FBI to determine if a crime was actually committed.

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An ISIS flag hangs from a fence in Pittsfield, New Hampshire. (Photo Credit WBZ-TV)

“Giving what that flag represents, it understandably caused public alarm and concern,” said Pittsfield Police Chief Jeffrey Cain. “The flag itself is probably going to be protected under freedom of speech.”

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Neighbors are responding by flying American flags outside of their own homes.