Police are looking into claims ducks are being taken from Witham's River Walk and killed.
Kelly Peters, of The Courts, in Witham, was heading to Templars Primary School when she claims she saw a gang of men holding two ducks by the throat.
Rumours have also been circulating on social media about further incidents in the town more recently.
Sgt Martin Richards said: "We have been down to the River Walk and done patrols.
"We have found no remains such as carcasses or feathers, so at the moment we have no evidence to suggest this is happening but that doesn't mean it's not."
Neither Witham Town Council or the RSPCA had received any reports.
See the Witham Times for the full story