Police say they want to find those responsible for obstructing the TT course.
Officers say a chair was thrown onto the Course just above the Creg Ny Baa this afternoon.
The force is appealing for anyone who has an explanation as to how the incident happened to come forward.
If you have any information you’re being asked to contact Police headquarters.
New laws for young workers come into force today
Manx Care extends mental health service to more surgeries
Bus Vannin confirms normal services to run over Easter
Steam Packet's new Northern Irish route launches today
Creamery reassures milk buyers over price rise
April fool - did you get caught this morning?!
Tea room shuts its doors for good
Milk up more than 5p a pint from today