Police in Norwich are warning residents of a possible scam.
According to officials, signs have been attached to telephone poles around the city advertising internet, cable and phone services.
Authorities said the ads feature a phone number and, when dialed, the caller is sent directly to a voicemail.
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Officers said not to call the number or leave a message and that the calls are not returned.
Police are investigating the signs.
Authorities added that the posting of signs on telephone poles is illegal under a City Ordinance.