As Kabul came under siege earlier than expected, India on Sunday drew up contingency plans to evacuate diplomats and nationals from Afghanistan but a final call on shuttering the embassy had not been taken till evening.

“India is closely monitoring the fast-changing situation in Afghanistan to decide on the evacuation of diplomatic personnel from Kabul,’’ sources said when asked if a decision had been taken about the embassy in the Afghan capital in the wake of the Taliban reaching the capital’s outskirts.

The Kabul mission is now India’s only functional diplomatic post in Afghanistan.

A routine Air India flight which had to hover in the skies above Kabul for over an hour early Sunday afternoon before managing to land in the midst of the Taliban siege of the capital left the city in the evening with 129 passengers.

While Air India has not yet cancelled its scheduled services to Kabul, India — according to sources — has Indian Air Force flights on stand-by; ready to proceed to Afghanistan for evacuation of diplomats and other Indians still in the country.