US Charge d'Affairs Richard Hoagland was called to the Foreign Ministry and "officially conveyed the government's serious concern regarding drone strikes in Pakistani territory", an official statement said.
Pakistan and the United States on Tuesday signed a Memorandum of Understanding on transporting supplies for NATO forces in Afghanistan through Pakistani territory after weeks of intense negotiations.
An understanding between Pakistan and the United States on reopening the North Atlantic Treaty Organisation supply routes to Afghanistan after a seven-month blockade may soon be replaced by a new bilateral logistics pact.
Violence flared up in Pakistan on the day of protest against an anti-Islam film on Friday, with a man dying after being hit by a bullet allegedly fired by police as angry demonstrators chanted slogans against the US and set ablaze two cinema halls in Peshawar.
Pakistan on Friday summoned the acting American envoy to lodge a "strong protest" against an anti-Islam film and demanded that the US government take immediate steps to remove the "blasphemous" video from YouTube.
Pakistan foreign ministry on Monday summoned the acting American envoy and lodged a "strong protest" over the tabling of a resolution in the United States Congress seeking the right to self-determination for the Baloch people which has emerged as the latest irritant in bilateral ties.
Atul Keshap, a senior Indian American career diplomat and one of the rising stars in the United States foreign service, has been picked by Nisha Desai Biswal, the newly appointed assistant secretary of state for South and Central Asian affairs, to be her deputy.
On her last day as India's envoy to the United States, Ambassador Nirupama Rao was felicitated by the Barck Obama administration at the State Department on Monday, with US Secretary of State John F Kerry thanking her for her service toward furthering the strategic partnership between the two nations.