Pakistan fired back on Wednesday at New Delhi's "jingoistic rhetoric" after India's foreign minister vowed to gain control over Islamabad's portion of the disputed Kashmir region as tensions flare between the nuclear-armed rivals.

The neighbors have been locked in an escalating war of words since New Delhi stripped Indian-administered Kashmir of its autonomy last month and imposed a security lockdown on the area, sparking outrage in Pakistan.

Pakistan Prime Minister Imran Khan also said on Wednesday that there was "no chance of talks" with India about its clampdown on the disputed territory of Kashmir until it lifted a curfew for people there.

Since independence from Britain in 1947, India and Pakistan have fought two wars over Kashmir, which is divided between the two but claimed by each in its entirety.

"We strongly condemn and reject the inflammatory and irresponsible remarks made by the Indian external affairs minister," Pakistan's Foreign Ministry said in a statement.

"Such irresponsible and belligerent statements have the potential to further escalate tensions and seriously jeopardize peace and security in the region," it added.

The statement came hours after Indian foreign minister Subrahmanyam Jaishankar told a press conference on Tuesday that Pakistani-controlled Kashmir is "part of India and we expect one day that we will have the... physical jurisdiction over it."

Tensions have spiraled since New Delhi's move on its side of the de facto border – the Line of Control – to change the status of the Himalayan territory.

Khan has held demonstrations across the country to protest against the move and vowed to highlight the issue later this month at the UN General Assembly in New York.

(With inputs from Reuters, AFP)