NEW DELHI: Fearing threats to its establishments and diplomats in India, Pakistan has sought more security from the Indian government. Official sources confirmed that the Pakistan high commission had received letters in the past few days threatening to harm its officials. Pakistan high commission officials on Tuesday took up the issue with the ministry of external affairs (MEA).Pakistan has demanded that the letters be thoroughly probed and the identity of senders ascertained. It conveyed to India that it is New Delhi's responsibility to ensure the security of Pakistan high commission and all its diplomats and other staff.An Indian government source said security agencies had been sensitized about the threat mails, one of which was forwarded by the Pakistan high commission. “We provide maximum possible security to all missions and same is the case with Pakistan,'' he said. There was no confirmation about who sent the threat mails.The development comes in the middle of the ongoing general elections in which Pakistan has willy-nilly become a part of the campaign rhetoric of both the BJP and Congress . The two parties came together recently to slam a statement by Pakistan interior minister Chaudhary Nisar Khan that Narendra Modi as prime minister would not be good for peace in the region.Khan had said Modi, as India's PM, would “destabilize regional peace” because be had not learnt any lesson from his “shameful” acts as Gujarat chief minister. This was after Modi said that he would try and bring underworld don Dawood Ibrahim back to India. The BJP asked Pakistan to “mend its ways''.Modi himself though has spoken about the importance of building trust with Pakistan. “We should not be constrained by what has happened in the past if the present throws up new possibilities in terms of solutions,'' he said in an interview to TOI.Pakistan was also angry over New Delhi’s refusal to give visas to over 500 Pakistani pilgrims who wanted to visit the Ajmer Sharif shrine. While India regretted the development saying it wasn't possible to ensure security for the pilgrims at the time of elections, Pakistan protested officially saying that this was the 4th time India had rejected visas for Ajmer pilgrims in the past one year.