Stating that Pakistan has reneged on its promise not to allow its territory to be used for hostile activities against India, an Indian overseas group has asked Islamabad to explain why leaders of banned outfits have been receiving official protection there. "The Pakistani government had promised not to permit its territory to be used for hostile acts against India. Pakistan is, thus, committed to honour a binding pledge," the Indian Overseas Congress (London) UK chief Balwant Kapoor said on Monday. "The failure of Pakistani authorities to co-operate in the face of incontrovertible evidence of the attack being staged from Pakistan will thoroughly expose them before the world," Kapoor, a freedom fighter, said in a statement. "If Mumbai's underworld connived with the external forces, the Pakistani government must explain why leaders of such outfits have been receiving official protection in Pakistan," he said. Kapoor said that the way the High Commissioner of Pakistan to the UK rushed to issue statements to TV channels on the audacious terrorist attack in Mumbai indicated a "guilty conscience". "India so far only suspects elements based in Pakistan being involved in the outrage, not the Pakistan government." He also criticised BJP leader LK Advani for politicising the issue and failing to attend the all-party meeting convened by Prime Minister Manmohan Singh in Delhi yesterday. The IOC president slammed Gujarat Chief Minister Narendra Modi for abusing Anti-Terrorism Squad chief Hemant Karkare days before his killing for arresting Hindu terrorists suspected of being behind bomb blasts in the town of Malegaon.