Kashmir border: Pakistan says India killed soldier 15 January 2013 Last updated at 20:31 Pakistan's military has accused the Indian army of killing one of its soldiers with "unprovoked firing" across the disputed Kashmir border. A military statement said the "ceasefire violation" occurred along the Line of Control (LoC) in Hot Spring and Jandrot sectors. India has not yet responded. Tensions have risen following deadly exchanges along the border last week, in which two Indian soldiers and two Pakistani soldiers died. Barbaric act Earlier on Tuesday, Indian PM Manmohan Singh said the killings of the Indian soldiers last week - one of whom India says was beheaded - was "unacceptable." This is the worst crisis to hit India-Pakistan relations since the 2008 Mumbai attacks and a fledgling peace process under way since February last year looks like it could unravel. Pakistani hockey players are being sent back from India and a landmark visa-on-arrival scheme has been deferred. These were small but important measures aimed at building trust between the two neighbours, and it is not insignificant that they have been affected. What is alarming is the strong reactions, particularly in India. Belligerent statements from the army chief as well as opposition politicians have put the government on the defensive, so it will be difficult for it to appear conciliatory towards Pakistan. This is an election year in Pakistan and we are a year away from polls in India - so both governments will have their eye on domestic opinion. An armed confrontation is extremely unlikely. Both sides have indicated that there is a need for restraint, so although the rhetoric is harsh it is unlikely to be matched with action. "After this barbaric act, there cannot be business as usual with Pakistan," he said. A day earlier, Indian army chief Gen Bikram Singh accused Pakistan of "pre-meditated, pre-planned activity," and urged Indian troops to be "aggressive and offensive in the face of provocation and fire" from Pakistan. But despite Indian accusations that Pakistan is in breach of ceasefire accords, two Indian newspapers have suggested the reverse may be true. The reports last week said Indian commanders might have precipitated the clashes by ordering new observation posts on the LoC after a 70-year-old woman crossed it unhindered last year. The Indian army has denied any provocative actions but said there had been "routine maintenance of fortifications." India was set to begin a landmark visa-on-arrival deal for Pakistani senior citizens at the Wagah crossing, but this has been put on hold. Claimed by both countries, Kashmir has been a flashpoint for over 60 years and two wars have been fought over it.