Parmar is the third member of the right-wing extremists group to be caught — in the last 10 days investigators have arrested two other accused, Rajinder Pehelwan alias Samandar and Dhan Singh.
The group, led by former RSS pracharak Sunil Joshi, is believed to be behind blasts in mosques and places crowded by Muslims between 2006 and 2008.
Parmar is a close associate of Samandar and Dhan Singh. All three of them were once active members of the Rashtriya Swayamsevak Sangh (RSS).
Investigators suspect that Samandar and Parmar planted two IEDs during Friday prayers in Mecca Masjid of Hyderabad. Only one of the IED exploded.
According to sources, Dhan Singh and Samandar were known as Hindu hardliners in their area who used to frequently abused Muslims claiming that the community was loyal to Pakistan and Bangladesh and aided terror activities in India.
Samandar is alleged to have planted IEDs in Samjhauta Express train (February, 2007) and Mecca Masjid.
He is also emerging as a prime suspect in the Malegaon blasts of September 2006 and in the murder of his mentor Sunil Joshi in December 2007, while Dhan Singh is alleged to have planted IED-fitted motor bike in Malegaon in September 2008.