ISLAMABAD, June 12 Foreign Minister Shah Mahmood Qureshi on Thursday lodged a protest with the Nato secretary general on the 'unprovoked and senseless' attack on a Pakistani checkpoint two days ago.

However, he expressed the government's commitment to continue working with US-led coalition troops in Afghanistan.

“Pakistan, on its part, will continue to have security cooperation with Afghanistan, under the mechanism of the Tripartite Military Commission,” Foreign Minister Shah Mehmood Qureshi told the international conference on Afghanistan in Paris.

The US-led air strike, which was the third in as many months after the formation of a new government in Islamabad, was denounced by Pakistan's leadership as cowardly and unprovoked. “The attack struck at the very basis of cooperation in the war against terrorism,” a statement said.

Pakistan's repeated protests with the tripartite commission have largely gone unheeded.

The tripartite commission comprises Nato's International Security Assistance Force (ISAF), Afghanistan and Pakistan, is meant to coordinate actions against militants, including stopping them from crossing the porous border and a mechanism for addressing border violations.