Pakistan on Thursday accused India of trying to "sabotage" the $46 billion China-Pakistan Economic Corridor (CPEC).
Foreign Office Spokesman Nafees Zakaraia said that India was openly opposing the CPEC that links China's Xinjiang region with Pakistan's Gwadar port.
"We are aware of Indian government's plans to sabotage CPEC," he said, adding "India's interference in Pakistan is not concealed."
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He claimed that India has been involved in terrorist activities in Pakistan.
"We have taken issue to the UN Secretary General about involvement of India in terrorist activities in Pakistan."
He also accused India of endangering regional peace through it military buildup.
"Indian defence buildup is not in the interest of the region," Zakaria said.
"It is a matter of grave concern and endangering the peace in the region and disturbing the strategic balance."
Pakistan last week had claimed that India was building a "secret nuclear city" and accumulated a stockpile of nuclear weapons which threatens to undermine the strategic balance of power in the region.
He also alleged that Indian atrocities against Kashmiris are continuing unabated and said that Pakistan was committed to the Kashmiris' legitimate movement for self-determination.
He also accused India of "violating ceasefire on the Line of Control and Working Boundary resulting into loss of precious civilian lives".
He said Pakistan has repeatedly lodged protest with India in this regard.