Police are investigating damage caused to the fencing surrounding the mast on the Snaefell summit.
Officers believe due to the nature of it, it hasn't been caused by adverse weather.
The constabulary added it's happened sometime between Friday, February 22 and Thursday, March 28.
Anyone with information is being asked to get in touch with Police Headquarters.
Second yellow weather warning issued
The Met Office has issued a second weather warning that comes into force this evening.
Treasury department completed three equality assessments out of 277 policy papers
Treasury Minister Alex Allinson says three equality impact assessments have been done out of 277 policy papers in the past year.
Robot coding workshop for girls taking place this month
A robot coding workshop for girls will take place this month, by Island Charity Love Tech.
Yellow weather warning issued for ice tomorrow
The Met Office has issued a weather warning for tomorrow.
Rescuers helped a poorly seal pup in Port Erin
Rescuers helped a poorly seal pup in Port Erin over the weekend.
Is this the way to Our Manx Villa?
A legendary crooner is bringing his final ever tour to the Isle of Man.
Tax havens like IOM have legitimate roles, says Tory MP
A Conservative MP has congratulated the Isle of Man on its moves towards financial transparency, adding "there is a legitimate role for tax havens".
Liberal Vannin party welcomes pension 'climb down'
One of the Island's political parties says it welcomes a government U-turn over pensions.
