Angry protesters said the attacks were an open violation of international human rights

Pakistani demonstrators have rallied on Thursday against unauthorized US drone attacks on the Afghan-Pakistani border amid ongoing instability in the country's tribal regions.

At least 800 activists of Pukhtoon Students Federation (PSF), along with local tribesmen, gathered in the city of Dera Ismail Khan in Khyber-Pakhtunkhwa Province to condemn the attacks on the northwestern Waziristan region that have claimed hundreds of lives so far.

A US drone attack on Datta Khel in North Waziristan claimed the lives of 44 people last Thursday.

The angry protesters said the attacks were an open violation of international human rights. They burned the American flag as well as an effigy of US President Barack Obama.

Elsewhere in Wana, the largest town of South Waziristan Agency, tribesmen held demonstrations, carrying banners and placards with anti-US slogans on them. The demonstrators called on the government to try those responsible for the bombings of innocent civilians.