At 11.36am yesterday, police were called to attend "a concern for safety" at a property on Third Avenue.
Following the visit, officers visited another house on the same street.
Inside, they discovered a number of cannabis plants in the attic and cellar.
No one was in at the house at the time of the police's visit and enquiries are ongoing.
Northern PowerGrid also attended to ensure the electricity was safe.
Anyone with information that might help with the police's investigation should call them on 101 or pass information on anonymously on 0800 555111.