Nothing less than an accident, in which four people died after a 40-feet steel frame of an illegal hoarding came crashing down on them in Pune, could wake up the Thane Municipal Corporation (TMC) from its deep slumber and force it to initiate action against all such billboards put up without prior permission.

On Sunday, civic commissioner, Sanjeev Jaiswal, ordered a structural audit of all the hoardings and posters in Thane and has asked the officials concerned to submit a list of the illegal ones.