"I have ordered an inquiry," Fadnavis told PTI.
The incident took place on Tuesday night when the mob of around 20-25 persons, led by NCP corporator Ashish Damle, attacked the ashram of Ratnakar Maharaj and damaged its property.
The inmates were manhandled and the mob also looted Rs 1 lakh from the ashram, police said.
Police have already registered a case under various sections of the IPC in this connection, but are yet to make any arrests.