Police are investigating after a TT fan crossed the course while roads were closed last night.
The incident happened at Parliament Square in Ramsey as last night's practice session got underway.
Marshals spoke to the man, who walked across the road after the course had shut.
He's been reported to police.
Vondy's Garage site up for sale
Appeal for walkers not to disturb birds at beauty spot
Company behind Douglas bar to face court date
DoI can't give info about MHK parking fines
Plans submitted for hospital improvements
Brace for fuel price rises, says Chief Minister
Safety drills to prepare the Manannan today
Band headquarters vandalised with mud