WINCHESTER, England, Jan. 2 (UPI) -- Police in Winchester, England, have started a campaign to fight terrorism with a new poster urging the public to remain vigilant against possible threats.

Officials say while there has been no specific threat posed to the region, authorities maintain that the threat remains at a severe level. Police say the posters are a response to the threat potential and are aimed at making the area a hostile environment for any would-be terrorists, the Daily Echo reported.

"Our message is be alert and not alarmed," Inspector Jim Atherton, specialist operations counter-terrorism strategy coordinator, said in a statement. "The posters we have had produced are highlighting to the public the activity which we know takes places in the planning stages of a terrorist attack.

"They may be very simple actions such as observing security procedures and routines, note taking or even an individual making repeated visits to a location. In isolation, these activities could be viewed as harmless, but there may be a more sinister motive. We are asking members of the public to remain vigilant, be our eyes and ears, and report any suspicious activity to us."