miranshah pakistan bomb rig motorcycle explode militant-plagued part northwest pakistan near afghan border kill nine people officials say wednesday late violence recent rise attack nuclear-armed country bomb detonate remote control late tuesday army vehicle pass mir ali town north waziristan region say three pakistani officials decline identify authorize speak media spokesman pakistani army responsible security volatile ethnic pashtun region respond call seek comment waziristan bleed say police official tahir khan peshawar main city northwest say hear blast detail militant group claim responsibility north waziristan long home pakistani foreign islamist militants link taliban al qaeda pakistani army launch major push mid-2014 military offensive clear militants base largely break network force flee either porous border afghanistan part pakistan militants strike back sometimes major attack last friday three pakistani taliban suicide bombers storm college peshawar kill eight students guard week early senior police commander kill suicide bomb attack peshawar tuesday pakistani taliban kill member anti-taliban faction another part northwest bomb aim members another pro-government faction kill five people week early pakistani taliban fight topple government impose strict interpretation islamic law loosely ally afghan taliban rule afghanistan overthrow u.s.-backed military action 2001. u.s. defense secretary jim mattis visit pakistan week urge redouble efforts rein militants accuse use country base carry attack afghanistan bomb blast kill nine people pakistan near afghan border