Pakistan protest US drone strikesPakistani Prime Minister Nawaz Sharif summoned a top American envoy to protest a U.S. drone strike that killed at least six militants in the volatile North Waziristan province.

According to a statement released by Pakistan government, “Pakistan strongly condemns the drone strikes which are a violation of Pakistan’s sovereignty and territorial integrity. The importance of bringing an immediate end to drone strikes was emphasized.”

The statement further added, U.S. Charges D’Affaires Richard Hoagland was summoned to Pakistan’s Foreign Office to receive the government’s official protest. U.S.

Sartaj Aziz, Pakistan’s national security adviser on Saturday said, “Obviously this is an issue that will be taken up at a higher political level with the American authorities.”

A U.S. Embassy official confirmed to The Associated Press that the encounter took place, but did not provide further details.

This comes as at least two suspected U.S. drone attacks have taken place in Pakistan in a little more than a week and occurred just days after Sharif vowed in his inaugural speech to stand up to Washington over the issue.