An audit ordered by the Victorian cladding task force has found the Melbourne apartment complex that was the scene of a combustible cladding fire this week was deemed as a “moderate risk”.

The blaze, which started on the 22nd floor early Monday morning and spread its way up to the 27th floor, took up to 60 firefighters to contain.

Firefighters say the fire was caused by a discarded cigarette on an apartment balcony, which was then fuelled by the cladding.