After reports that a stink bomb was found in a ballot box, Kent Police confirmed they are investigating.
A spokeswoman said two vials containing an unknown liquid were found in the Beacon Hill in Herne Bay.
Tests will be carried out on the substance.
More top news
People could suffer vision loss or infection from the lenses, which are often sold illegally online, in shops and on market stalls.
Between 2011 and 2014 reports of self-harm among British girls aged between 13 and 16 rose by 68%, according to new research.
Vehicle imports and exports could be seriously affected by a no-deal Brexit scenario.