Unknown assailants fired rocket propelled grenades at the military academy near Osama bin Laden’s compound in the Pakistani city of Abbottabad early this morning, causing damage but no casualties, police said.

Gunmen ambushed a bus carrying Sunni Muslims and killed all 10 passengers in a troubled north western tribal region of Pakistan today, a government official said.

A day-long clash between militants from Afghanistan who crossed the border and attacked a Pakistani checkpoint left 23 troops and 35 insurgents dead, police said today, underlining the challenges facing Pakistan as it tries to stamp out insurgents in its north-west.