quetta pakistan pakistani taliban suicide bomber ram car police truck southwestern city quetta wednesday kill least seven people police say attack kill five police officials two passers-by outskirts city quetta police chief abdur razzaq cheema say say 22 people wound eight critically sarfraz bugti home minister baluchistan province quetta capital tell reuters suicide blast quetta 100 km 60 miles east border afghanistan bugti say truck carry police officials way city drop post suicide bomber ram vehicle television picture show burn wreckage vehicles pakistani taliban umbrella organisation various militant group within pakistan loosely ally afghan taliban issue statement claim responsibility baluchistan province long scene insurgency separatists fight state demand share gas- mineral-rich region resources also accuse central government discrimination taliban sunni islam militants sectarian group link al qaeda islamic state group also operate strategically important region border iran well afghanistan violence fuel concern security project 57 billion china pakistan economic corridor transport energy link plan run western china pakistan southern deep-water port gwadar suicide bomb claim islamic state sufi muslim shrine month kill 22 people wound 30. ayub qureshi provincial police chief say counter-terrorism police officer shoot kill another part quetta authorities deal suicide bomb militant sectarian faction lashkar-e-jhangvi al-almi claim responsibility kill counter-terrorism official plant roadside bomb northwestern region kill two soldier security officials say remote-controlled bomb set army vehicle pass pakistani taliban suicide bomber ram police truck kill seven