Modi welcomed Afghanistan President Ashraf Ghani at the Golden Temple here and the two leaders were seen greeting and embracing each other.
After taking a walk through the renovated heritage corridor in the Holy City, Modi was seen serving langar at the Golden Temple.
Modi alongwith Punjab CM, Deputy CM and Union Minister Harsimrat Kaur Badal, then offered prayers at the Golden Temple.
Meanwhile, Pak PM's Foreign Affairs Advisor Sartaj Aziz arrived in Amritsar to attend the conference.
The Heart of Asia ministerial conference began in Amritsar on Saturday amid heightened tensions between Pakistan and India, triggering speculation on whether the two countries will engage in bilateral talks on the event's sidelines.