Among the dead : an 18 - old boy . Pakistani Taliban announce a week - long cease - fire . Eleven people were killed Saturday when two vans carrying a polio vaccination team were hit by a roadside bomb in Pakistan 's northern Khyber Agency , authorities said . Security forces and militants fire upon each other . Two vans carrying a polio research team are hit by a roadside bomb .
Among the dead : an 18 - old boy . Pakistani Taliban announce a week - long cease - fire . Security forces and militants fire upon each other . Two vans carrying a polio research team are hit by a roadside bomb .