Khuzdar:A leader of Balochistan National Party (BNP) and three other persons were gunned down near here on Saturday. BNP leader Mir Nawaz Amanullah Khan Zarakzai was going somewhere when his convoy was attacked near Zehri area. As a result, Amanullah Khan and three other persons including his grandson died on the spot. Bodies were shifted to local hospital. However, the killers managed to flee.