The Bharatiya Janata Party Tuesday accused Pakistan of negation of all accords with India since the 1972 Simla agreement for refusing to extradite any Mumbai blast suspects, a move it claimed showed Prime Minister Manmohan Singh's [Images] assessment of Islamabad was wrong.

BJP spokesman Prakash Javadekar reinforced his party's demand to suspend talks with Islamabad in the light of Pakistan Foreign Office spokesperson Tasnim Aslam's remarks that her country was ready to help India investigate the Mumbai bombings but would not hand over suspects.

"By declaring its unwillingness to hand over Mumbai train blast suspects to India, Pakistan has wiped out the essence of all the agreements between the two countries, right from Simla to Havana, in one go. Our party condemns Islamabad's attitude in this regard," he said.

Also, he insisted Pakistan has given a "decent burial" to the anti-terror joint mechanism before it came into being by declining extradition of the blast suspects.

"This has once again proved how our prime minister was wrong in assessing the real design and intent of Pakistan for continuation of bilateral talks," Javadekar said.

The BJP leader recalled Pakistan had earlier refused to extradite India's most wanted terrorists and turned down Afghanistan's charges of sheltering Taliban militants. He also accused Pakistan of interference with India's internal affairs for calling Mumbai police findings pointing to the ISI involvement in the train bombings an attempt to deflect attention from last month's attack in Malegaon.

"The government of India must explain its position on these remarks of Pakistan, which are a case of interference in internal affairs of our country," Javadekar said.