WESTERLY, R.I. (CBS) – Public health officials are alerting people to a possible rabies exposure in Westerly, Rhode Island after an animal bit several customers at a Walmart on the Fourth of July.

The incident happened at the Walmart store on Post Road Monday between 4 p.m. and 5 p.m.

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At least two people were reportedly bitten by a small black mammal that might have been a ferret, mink or weasel, according to authorities. Those two people have not yet come forward to seek medical attention.

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The animal was not tested, and the concern is that it might have been rabid. Rabies is fatal in humans and animals once symptoms appear, according to the health officials.

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Anyone who may have had any contact with the animal inside or outside the store is asked to contact the Rhode Island Department of Health so they can be immunized.