Pakistan's ISI and al-Qaeda have threatened to blow up the offices of the BJP's Assam unit and All Assam Students Union and also to kill AASU advisor Samujjal Bhattacharya.

A letter addressed to the BJP state unit's president, Ramen Kalita, by eight persons claiming to be ISI and al-Qaeda active members in Assam threatened "to bomb out the main BJP and AASU offices like the World Trade Centre".

"Your offer to (Bangladeshi writer) Taslima Nasreen [Images] to stay in Assam Is against Islam and its tenets. If you don't stop your activities immediately a powerful bomb will be exploded in your main office," cautioned the letter made available to the media.

The hand-written letter, in immigrant Bangladeshi-style Assamese dated December 11 on plain paper and received by post on  alleged that the BJP under Kalita's leadership was "resorting to mental and physical torture of local Muslims.

"Samujjal Bhattacharya's death is also certain for his activities as AASU advisor," the letter threatened.
Kalita said an FIR had been lodged at the Dispur police station and the highest police authority informed.

AASU's Bhattacharya said, ''It is the duty of the state government to find out the source of the letter and take appropriate steps."