"There has been no case of secret killings as alleged by the petitioner nor was there any connivance of former Chief Minister P K Mahanta with the Central government in this regard," the state government said in its affidavit filed before the Supreme Court.

It was responding to allegations by NGO AALOK, which sought a CBI inquiry and prosecution of politicians, and army and state police officials allegedly involved in "secret killings" of 265 ULFA activists between 1998 and 2001.

Maintaining that the PIL involves intricate questions of facts, the state government said the alleged killings, which were reported to police, were under different stages of investigation and were looked into by a commission of Inquiry headed by Justice S N Saikia.

However, the allegations of "secret killings" made by the NGO were without any proof or sustainable evidence as the incidents narrated in the PIL did not show prima facie involvement of state or central machineries in this.

Ruling out the possibility of 265 such killings, the Assam government submitted that "a close scrutiny of documents filed by the petitioner shows that the total number of persons allegedly killed in the circumstances as mentioned by the petitioner is only 188."