The Department of Infrastructure says incidents of vandalism on the Islands Heritage Trail continue to be reported.
Officials say tools are being used to cut fencing, barriers pushed over and materials strewn about on the public route which is currently undergoing improvement works.
Meanwhile, the DOI has added the route will be temporarily opened to the public from 5.30pm tomorrow until 8am next Monday (July 8) to allow people to walk or cycle to the Tynwald Day ceremony in St Johns.
Following that, work will continue between Glenfaba Bridge at St Johns and Ballachurry Lane in Greeba and Crosby - the route isn't accessible to the public between 8.30am and 5pm during the working week.
Repairs on Peel Power Station to get underway
Manx Care doctor survey to be discussed by Tynwald
Weather warning for snow tonight
MHK queries safety at primary school in Ballabeg
Gales put two ferry sailings at risk tonight
Should the Island throw a birthday party for Barry Gibb?
Warning issued over icy roads
High ground could see 4 inches of snow on Saturday night