Firefighters were called to a fire in Caister on Friday afternoon which police believe was started deliberately.
A fire engine from Gorleston attended the blaze in Castle Lane which was caused by four bags of rubbish being set alight in the open.
A spokesman for Norfolk Police said officers believe the fire was started intentionally.
Crews were called to the incident at 1.20pm but had dealt with the fire by 1.52pm.
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