Amid the rising controversy over India's surgical strikes claim , the United Nations said its mission tasked at monitoring the ceasefire line between India and Pakistan "has not directly observed" any firing on the defacto border in the disputed region of Kashmir.

The UN Military Observer Group in India and Pakistan (UNMOGIP) "has not directly observed any firing across the LoC related to the latest incident," according to Stephane Dujarric, spokesperson for UN Secretary General Ban Ki-Moon told reporters.

In India, the main opposition Congress leader on Tuesday dubbed the supposed surgical strikes conducted by the Indian Army last week as fake.

While hitting out at the ruling Prime Minister Narendra Modi led Bharatiya Janata Party (BJP), opposition leader Sanjay Nirupam tweeted: "Every Indian wants #SurgicalStrikesAgainstPak but not a fake one to extract just political benefit by #BJP. Politics over national interest."

The opposition Congress party asked the ruling BJP government to show "credible evidence" of last week "surgical strikes".

Meanwhile, Pakistan has also scaled up an international pressure to disprove India's claim of having successfully raided across the border.

A CNN report on Sunday stated that Pakistan's military had "brought in a busload of foreign journalists" to one of the five posts that Indian Special Forces had claimed to have struck.

The reporter stated there were no signs of any Indian raid. The Pakistan government and army has repeatedly dismissed claims that India's military conducted "surgical strikes" on its side of the border in Kashmir region.

The fresh tension between the two countries comes at a time when the Narendra Modi government in India has been struggling to contain protests on the streets of disputed Kashmir, where more than 80 civilians have been killed and thousands wounded in the last 10 weeks after a young separatist militant was killed by Indian security forces.