The say two sheds on Beards Road were deliberately set on fire in the early hours of last Thursday.
The fire is believed to have occurred at around 12.25am.
Police are asking anyone who may have witnessed the incident, saw anything suspicious in that area at that time, or has any relevant information, to contact them on 101 quoting PR/45240075525
If you do not wish to speak to police, you can contact independent charity Crimestoppers on 0800 555 111.