ISLAMABAD: Minister for Defence Khawaja Asif on Friday said that Prime Minister Nawaz Sharif, who is currently in London for a medical check-up, will undergo open-heart surgery on Tuesday. Asif said that the prime minister will be staying in the hospital for a week following surgery. “The prime minister will travel after one week, on doctor’s permission,” he said. Earlier, Prime Minister’s House spokesperson Mohiuddin Wani had said, “Nawaz Sharif will be staying for another day in London on the advice of doctors.” Wani, however, dismissed the reports that Nawaz Sharif will be travelling to New York from London for advanced treatment. “There is no such plan on the cards,” he said. This is Nawaz’s second trip to London for medical check-up in few weeks’ time. The prime minister underwent a check-up in Pakistan last month following which he decided to visit London for a proper medical check-up.