Anyone with information is asked to contact Portree police on 101 quoting incident no 1,442 of February 12.
During the last week, appliances were called out to blazes in Harris, Benbecula, Bernera, Skye and near Oban, Skye seeing five separate callouts within 24 hours and nine in three days.
Frozen vegetation and windy conditions led to fire spreading rapidly putting emergency services under pressure. Blazes on Harris and Benbecula also broke out, the latter being very remote and equivalent to a couple of hundred acres with a 500-metre fire front.
Alasdair Allan, MSP for Na h-Eileanan an Iar, praised those across the Western Isles who had responded to a high number of call-outs to bring muirburn under control.
'The fire crews are to be praised for their efforts in helping protect life and property,' he said.
'Many are volunteers, attending call-outs after a full day’s work only to be up all night fighting the blazes. Several of the fires have been of considerable size and in difficult to access areas.
'Fire crews, alongside the coastguard, have also been busy assisting with vaccination clinics. In the current pandemic, we should avoid any actions which may put our emergency services under any unnecessary pressure. I would urge people to refrain from undertaking muirburn under the present extreme conditions.'
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