Maharashtra Home Minister R R Patil on Thursday revealed that the police was in possession of an audio tape comprising a conversation of Malegaon bomb blast accused making derogatory references to RSS chief Mohan Bhagwat.
Replying to a debate on law and order in the Legislative Assembly, Patil said the conversation also pertains to use of a chemical powder which if applied on footwear would result in the death of the person using it within two to three days.
"Even the post-mortem will not help to find the cause of death," Patil said.
He said that there is a mention in the conversation that Bhagwat is unfit to lead the Hindutva outfit.
All the accused in the Malegaon bomb blast case have links with Abhinav Bharat, a right-wing organisation.
Earlier, participating in the debate, NCP legislator Jeetendra Avhad had earlier alleged of links between Hindu organisations like Abhinav Bharat, Sanatam and Pakistan's ISI.
He charged the right-wing groups were involved in some bomb blast cases and also planned to kill the RSS chief and put the blame on ISI.
He wanted to know what action the government will take against the groups.
Patil said appropriate decision will be taken at the appropriate time.