Who is responsible for the 30 October serial blast in Assam?

"Assam blast: Govt says ULFA behind it,ULFA says RSS",Agencies,Posted: Nov 11, 2008 at 2106 hrs IST,Website-http://www.expressindia.com/latest-news/NDFB-ULFA-behind-serial-blasts-Assam-Govt/384343/

Guwahati, November 11: The Assam government on Tuesday held NDFB and ULFA responsible for the October 30 serial blasts which claimed the lives of 84 people.
“Involvement of some active members of National Democratic Front of Boroland (NDFB) has come to light during the course of investigation by the Special Investigation Team (SIT),” an official statement said in Guwahati.
“The involvement of ULFA in the conspiracy of carrying out the serial blasts in the state has also come to the fore during investigation,” it said.
Claiming that there has been “significant progress with regard to the investigation”, the government said “the main culprits who have perpetrated the crime have been identified and all efforts are on to apprehend them.
“Probable involvement of other agencies and organisations are also under investigation and the police have so far arrested eight persons,” it said.
The statement, however, makes no mention of the government’s earlier claim that Bangladesh-based HuJI could be responsible for the blasts by taking local help from ULFA and NDFB.
The NDFB, a dominant Bodo militant group, is currently under unilateral ceasefire with the Centre.
RSS involved in Assam blasts: ULFA
The banned ULFA alleged that RSS was behind the deadly October 30 blasts in Assam and ethnic violence in Bodo Territorial Administered Districts (BTAD).
The blast claimed 85 lives while 55 people died in the ethnic violence in BTAD areas.
In an e-mail statement, ULFA chairman Arabinda Rajkhowa further alleged that Assam Health Minister Himanta Biswa Sarmah was an agent of RSS and was blaming ULFA to cover up his involvement in the blasts.
"Whether Sarmah is in Congress or AGP, he is in reality an RSS agent and to cover up his involvement is making misleading statements like ULFA and Jehadi are the same," he said.
Rajkhowa claimed the ULFA has enough evidence to prove RSS's involvement in the October 30 blasts in four towns of Assam, including Guwahati.
"A few months ago, the ULFA in its mouthpiece Freedom had mentioned about the secret directive sent by RSS to carry out blasts in different parts of the country but the state government took no steps in this direction," he said.
Moreover, the recent blasts in different parts of the country and the subsequent arrests have also proved that RSS and BJP are involved in blasts in states ruled by non-BJP governments, Rajkhowa alleged.
He said that ULFA has never targeted indigenous Assamese population and has no links with jehadi or any other religious fundamentalist organisation.