The incident occurred between 8 April and 13 April
Police are investigating £2,000 worth of vandalism caused at The Bowl.
It happened between 9pm on Saturday (8 April) and 6.30am on Thursday (13 April).
Officers say the astro turf was set alight and matches were discovered melted into the surface at the point where the fire was started.
Anyone who has any information is urged to contact Police Headquarters on 631212.
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