The attack has raised the death toll from violence in the country to more than 100 so far this month.

An airstrike by U.S.-led forces mistakenly killed four policemen and two civilians in eastern Afghanistan.

Strike was failed bid to free more than a dozen Taliban prisoners.

Activists and relatives of around 90 Yemeni detainees protested outside the U.S. Embassy in Sanaa.

The killing comes as the monthly U.S. death toll rose sharply to 14 with the start of the spring fighting season.

The acting WHO chief in Pakistan said health workers have not been able to immunize children in Taliban strongholds since July 2012.

Targeted killings of militants using unmanned aerial aircraft ot the rise.

The two-day operation also killed a local Taliban commander, said a provincial government spokesman.

Eight suicide bombers besieged police HQ in coordinated attack.

Transfer of Parwan Detention Facility was last prison under U.S. control.