India, Oct. 7 -- Shiv Sena founder Bal Thackeray's father, Prabodhankar Thackeray, died 52 years ago, but a book written by him against blind faith and superstitions is now at the centre of controversy, and at least two investigations, in Maharashtra.

A viral video has given fuel to the spark. The video purportedly shows a group of nurses at a civic hospital in Mumbai throwing books written by Prabodhankar Thackeray (born Keshav Sitaram Thackeray) and another social activist at an officer who distributed them as gifts before retiring, back in July. The nurses alleged the books hurt their religious sentiments.

The books are 'Devlancha Dharm ani Dharmachi Devale' (The Religion of Temples and the Temples of Religion), authored by Prabodhan...