Firefighters were called to a fire in public toilets at St Edmund's Terrace, near the seafront.
The alarm was raised just after 10pm on Thursday, March 23. Appliances from Hunstanton and Heacham attended.
Norfolk fire service said: 'Crews used hose reel jets to extinguish the fire which had been deliberately started.'
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here