NEW : Suicide bomber in northwestern Afghanistan kills Three , authorities say . NEW : Suspect blew himself up after running out of bullets in gunfight , police say . Pakistan is in the midst of an intense military offensive against Taliban militants . Muslim authorities say they stopped plot on government buildings . Three men plotted to carry out attacks , says CNN Minister Baitullah Mehsud .
NEW : Suicide bomber in northwestern Afghanistan kills Three , authorities say . NEW : Suspect blew himself up after running out of bullets in gunfight , police say . Muslim authorities say they stopped plot on government buildings . Three men plotted to carry out attacks , says CNN Minister Baitullah Mehsud .