US has rushed two top security officials to Pakistan to press the government to intensify efforts to investigate the failed Times Square bomb plot. National Security Adviser James L Jones and CIA chief Leon E Panetta are likely to land in Pakistan today, in the highest-level American visit to Pakistan since the failed bombing plot. Pakistani-American Faisal Shahzad, 30, has been arrested by the federal authorities on charges of plotting the bomb at the Times Square on 1st of May.The US has said the investigations implicate the Pakistani Taliban in the attack. A senior Obama Administration official was quoted as saying by the New York Times that General Jones would not threaten the Pakistanis, but would convey the risks to the country's relationship with the United States if a deadly terrorist attack originated there. Secretary of State Hillary Clinton had also warned Pakistan of serious consequences, if a terrorist attack originated from their soil.At least three Pakistani nationals have also been arrested in the US on charges of providing finances to Shahzad, though it is yet to be known whether they knew where the money was being used. Pakistani authorities too have made several arrests in Karachi and other parts of the country in connection with the Times Square plot. Panetta and Jones would meet President Asif Ali Zardari, Prime Minister Yousuf Raza Gilani, Army Chief Gen Ashfaq Kayani and ISI chief Lt Gen Ahmed Shuja Pasha during their visit.