ISLAMABAD: Prime Minister Nawaz Sharif will return to Islamabad today (Tuesday) after three-day stay in Lahore.

Well-placed sources told The News here on Monday evening that he was unwell and had initial medical check-up in Lahore on Monday where he had been advised to proceed to London for his detailed medical check-up, which was due for a number of months but he had been putting it off due to his hectic official engagements.

Prime Minster Nawaz developed minor irregularity in his cardiac functions and for that he got treatment from a London hospital in 2011 well before becoming the prime minister in this stint. He had to undergo a simple procedure but incidentally it got complicated due to negligence of his interventionist cardiologist.

Later, the situation was brought quickly under control through emergent steps and his health returned to complete normalcy in the following days. Since then, he has been advised by his doctors to undergo regular check-up twice a year or at least once in a year.

Sources said that prime minister will be leaving for London tomorrow (Wednesday) with his brief personal staff. Some of his family members will also be present during his check-up in London.

The sources said that Prime Minister Nawaz will be returning Islamabad early next week after a thorough check-up. To a query, sources made it clear that Prime Minister Nawaz Sharif was going to London due to health reasons and it was nothing to do with the politics or any other development. The kite-flyers must desist from making speculations about it, the sources advised.

In the meanwhile, Prime Minister Nawaz Sharif assigned Punjab Chief Minister Shahbaz Sharif on Monday for his meetings earlier scheduled with the leaders of the ruling Pakistan Muslim League (PML-N). Shahbaz dashed to the federal capital for the meetings and returned Lahore in the afternoon. He had meeting with Federal Interior Minister Chaudhry Nisar Ali Khan and Finance Minister Senator Muhammad Ishaq Dar and other stalwarts of the party during his four hours stay in Islamabad. He had detailed discussions with the party leaders before returning Lahore. The understanding developed with the opposition for adoption of important bills in the joint sitting of the two houses of the Parliament including one about the Pakistan Intentional Airlines (PIA) was the outcome of the consultations of Shahbaz Sharif with the party leaders here, the sources added.