Firefighters were call to two deliberately lit fires in open areas on Monday night.
The first blaze was reported just before 10pm at Baliol Road in Gorleston-on-Sea. A crew from Gorleston Fire Station used backpack sprayers and hand appliances to put it out.
The second fire happened in Wilderness Lane, Harleston, and was reported just after 10pm. It was also in an open area and was put out using hand appliances. The fire service said both fires were arson.
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