A 40-year-old woman is facing arson charges following a suspicious fire in Dartmouth last night. Police and fire fighters were called to a fire at a building on Pleasant Street shortly before 6pm. No on was injured but the building suffered significant damage in the blaze and the Red Cross says three people in two apartment units have been displaced. Police say evidence at the scene indicated the fire was suspicious in nature. Police investigating the matter identified a potential suspect and took a 40-year-old woman into custody a short time later. Police say investigators have since determined the fire was deliberately set and the woman will be appearing in Dartmouth court to face arson charges at a later date.