Police and race organisers are requesting extra vigilance from spectators to the tampering of the safety barriers around the telegraph poles on the TT course.
It has come to the attention of race control that several of them have been removed or tampered with.
The safety barriers are there for the protection of the competitors and spectators alike.
Anyone tampering with these devices risks prosecution and the police request members of the public to report any sightings.
Isle of Man falls silent on Remembrance Sunday
Services taking place around the Island
MHK urges inclusion of 'commencement clause' in bill removing Bishop's vote
Chris Thomas says without, implementation may be out of Tynwald's hands
Drug dealer found with cocaine worth £13k jailed
John Golby was addicted to alcohol, cocaine and gambling, Douglas Courthouse heard
Glamping plan submitted for Ramsey Rugby Club during TT
Temporary five-year change of use sought to host glamping during TT race periods