Tariq also said that the authorities were `` using the media as a medium of propaganda for their war . '' NEW : Pakistan 's Prime Minister Nawaz Sharif condemns attack , cancels Davos trip . NEW : Main Pakistani Taliban faction claims responsibility , calls for fresh talks . TTP spokesman : Bombing was to avenge the death of a Pakistani Taliban commander . New York Times reports that U.S. officials believe militants may have been planning attacks in India and Afghanistan as well.
NEW : Pakistan 's Prime Minister Nawaz Sharif condemns attack , cancels Davos trip . NEW : Main Pakistani Taliban faction claims responsibility , calls for fresh talks . TTP spokesman : Bombing was to avenge the death of a Pakistani Taliban commander . New York Times reports that U.S. officials believe militants may have been planning attacks in India and Afghanistan as well.