QUETTA: Sardar Akhtar Mengal and other workers of his faction of the Balochistan National Party (BNP-M) remained unhurt on Saturday after a suicide bomber blew himself up near the party’s rally at Mastung. Mengal had announced a “long march” from Wadh to Quetta to protest the arrests of Baloch Yakjehti Committee (BYC) chief organiser Dr Mahrang Baloch and other leaders …