ISLAMABAD: A Foreign Office spokesman on Thursday said that a protest had been lodged by the Ministry of Foreign Affairs with the US Embassy here on drone strikes inside Pakistani territory on October 10 and 11.

The Foreign Office spokesman, in a statement, said that the United States Embassy was informed that the drone strikes on Pakistani territory were a clear violation of International Law and Pakistan's sovereignty.

These attacks are unacceptable to Pakistan, he added.

Earlier today, a US drone attack killed 16 suspected militants and injured six others in the Orakzai agency of Pakistan’s tribal region on Thursday.

Four missiles were fired in the Buland Khel area of the Orakzai agency, which is close to the borders of the North and South Waziristan tribal regions in Fata.

“The attack was aimed at the compound of Maulana Shakirullah, who is the commander of the Hafiz Gul Bahadur group of the Tehrik-i-Taliban Pakistan (TTP),” officials said.