East Sussex Fire and Rescue Service (ESFRS), along with Sussex Police, were called to a fire in the open outside at Saxonhurst Court, in Battle Road during the evening.
A spokesperson for ESFRS said crews attended the scene at 7.20pm.
The spokesperson said: “Firefighters from Hastings attended and used one hose reel to extinguish the fire. The cause was deemed deliberate so the incident was handed over to Sussex Police.”
