Officers say they carried out an extensive search in the area and used specialist resources, including a firearms support unit and the police helicopter (NPAS).
Further enquires with the members of the public who made the initial reports confirmed that there had been no sightings of anyone carrying a weapon. Officers concluded their search at just before 7.30pm and no individuals in possession of a weapon were identified.
A police spokesman added:
We would like to thank the members of the public that made the initial report as we believe this was made with good intent.
We take all reports of this nature extremely seriously. The significant police presence was put in place to enable us to search a large area and safely conclude the incident.