Indian Prime Minister Narendra Modi made a surprise stopover in Pakistan on Friday to meet his counterpart, Nawaz Sharif, the first time an Indian premier has visited the rival nation in over a decade.

‘At 1:30pm on Friday, India’s external affairs minister Sushma Swaraj received a call from her prime minister, who was winding up his visit to Afghanistan’, reported The Hindustan Times.

‘It was Sharif’s 66th birthday, and Modi told the minister that he had called the Pakistan PM from Kabul to greet him.’

‘You are in Kabul. Why don’t you come home (Lahore)?’ Sharif told Modi.

‘This short telephonic conversation, revealed by top official sources, is what set the stage for Modi’s unscheduled visit to Pakistan—the first by an Indian Prime Minister in 11 years.’

The visit, requested by Modi just hours earlier before he flew back home from Afghanistan, raised hopes that stop-and-start negotiations between the nuclear-armed neighbours might finally make progress after three wars and more than 65 years of hostility.

Sharif hugged Modi after he landed at the airport in the eastern city of Lahore and the two left by helicopter for Sharif’s nearby family estate. ‘So, you have finally come,’ Sharif told Modi, according to a Pakistani foreign ministry official who was at the meeting.

‘Yes, absolutely. I am here,’ Modi replied, according to the official. Modi phoned Sharif earlier in the day to wish him on his birthday and asked if he could make a stop in Pakistan on his way home, Pakistan’s top diplomat, Foreign Secretary Aizaz Chaudhry, told reporters. ‘And the PM said to him, ‘Please come, you are our guest, please come and have tea with me’,’ he said.

It was Sharif’s 66th birthday and the family home was festooned with lights for his grand-daughter’s wedding on Saturday. Modi and Sharif talked for about 90 minutes and shared an early-evening meal before the Indian leader flew back home.

‘Among the decisions taken was that ties between the two countries would be strengthened and also people-to-people contact would be strengthened so that the atmosphere can be created in which the peace process can move forward,’ Chaudhry said. Modi was on his way home after a visit to Russia.

He stopped off in the Afghanistan capital Kabul earlier on Friday, where he inaugurated a new parliament complex built with Indian help, reported Reuters.

The Lahore visit comes after India and Pakistan resumed high-level contacts with a brief conversation between Sharif and Modi at climate change talks in Paris late last month, part of efforts to restart a peace dialogue plagued by militant attacks and long-standing distrust.

A spokesman at Sharif’s office earlier told Reuters the two leaders were to discuss a range of bilateral issues, including the disputed Himalayan region of Kashmir, the most contentious issue dividing the nuclear-armed rivals. A close aide to Modi said the visit was a spontaneous decision by the prime minister and National Security Adviser Ajit Doval, and that it should not be seen as a sudden shift in India’s position. ‘But yes, it’s a clear signal that active engagement can be done at a quick pace,’ the aide said, declining to be identified.

Nalin Kohli, a spokesman for Modi’s Bharatiya Janata Party, said in New Delhi that India was ready to take two steps forward if Pakistan took one to improve ties.

The opposition Congress Party called Modi’s visit irresponsible and said that nothing had happened to warrant warming of ties between the rivals. Scheduled high-level talks between the two were cancelled in August after ceasefire violations across the border.

‘If the decision is not preposterous then it is utterly ridiculous,’ Congress leader Manish Tewari said. Opening the parliament building in Kabul, Modi pledged India’s support for the Afghan government and urged regional powers, including Pakistan, to work together to foster peace.

‘We know that Afghanistan’s success will require the cooperation and support of each of its neighbours,’ he said. ‘And all of us in the region — India, Pakistan, Iran and others — must unite in trust and cooperation behind the common purpose and in recognition of our common destiny.’

As well as the parliament building, India is also supplying three Russian-made Mi-35 helicopters to Afghanistan’s small air force, adding badly needed capacity to provide close air support to its hard-pressed security forces.